Hotel room types are identified by international codes that indicate how many beds there are and how they’re arranged: SGL is a single, DBL is a double with a double bed, TWIN is a double with two separate beds, DUS is a double room sold to a single guest, TPL is a triple, QDPL is a quadruple, JS is a junior suite and STE is a suite. What changes isn’t just the number of guests, but the floor area, the furnishings and the rate.
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Why hotels use these codes
The abbreviations exist because different systems need to talk to each other: the property’s management software, the channel manager, booking portals, agencies and tour operators. A room sold in Munich and loaded onto an American portal has to be identified unambiguously, and three letters solve that problem better than any description written in words.
The point that causes confusion is that the codes describe the bed configuration, not the quality of the room. A DBL can be a basic 14 square metre room or a 26 square metre sea view room: the code stays the same, only the commercial category the hotel assigns to it changes. That’s why almost every property pairs the code with a grading adjective, giving rise to combinations such as DBL superior or TWIN deluxe.
Standard room codes
SGL, single room
The single has just one bed, between 80 and 90 centimetres wide and 200 centimetres long. It’s the room type disappearing from new builds because it earns less per square metre, but it remains essential in city hotels working with business travellers and in properties near hospitals, courts and exhibition centres.
The minimum floor area in most regions is around 8 or 9 square metres net of the bathroom, and it’s precisely this tight space that makes the furnishings decisive. Furnishing a single hotel room means working with shallow depths, shelves instead of a full desk, open hanging rails rather than a two-door wardrobe.
DBL, double room with a double bed
The DBL sleeps two people in a single double bed. Standard hotel bed sizes put the double bed at 160 centimetres wide, rising to 180 in higher categories and reaching 200 in suites. The difference between a 160 and a 180 in terms of perceived comfort is significant, and so is the difference in how the room needs to be sized: at least 70 centimetres of clearance is needed on both sides of the bed for the room to remain practical.
TWIN room, double with separate beds
The TWIN has two distinct single beds, usually 90 by 200. It’s the configuration requested by colleagues travelling together, friends, organised groups and families with older children. Many properties manage this with pushable beds that become a double when the frames are joined and a topper is added on top: a solution that doubles the flexibility of the rate plan without doubling the number of rooms. Single beds for hotels designed for contract use are built precisely with feet and headboards compatible with this dual purpose.
DUS room, double for single use
The DUS isn’t a construction category but a commercial one: it’s a double room sold to a single guest. It arises when the property has no singles in inventory, or has run out of them, and still needs to accommodate someone travelling alone. The rate is lower than that of a double occupied by two people, because there’s one less breakfast and lower running costs, but higher than that of a true single, because the hotel is giving up potential revenue on that room.
Rooms for more people
TPL, triple room
Three beds, almost always made up of a double plus a single, or three singles. Regulations generally call for an extra 6 square metres of floor area for each bed beyond the second, so a triple works out at around 20 useful square metres.
QDPL, quadruple room
Four beds, often with a bunk bed or two double beds. It’s the leading room type in leisure properties, where the ratio of revenue to floor area is the highest in the entire inventory. It does, however, need a genuinely well sized wardrobe: four people mean four suitcases, and the luggage area is where most quadruple rooms fall short.
Family rooms and connecting rooms
The family room is a quadruple or quintuple laid out across two spaces, usually a sleeping area for adults and a nook or mezzanine for children. Connecting rooms, on the other hand, are two independent rooms linked by an internal door: they’re sold separately during periods of high demand and together when a family arrives. The connecting door needs to be treated exactly like a room door in every respect, with the same attention to sound insulation, otherwise the complaint arrives right on cue.
Junior suites, suites and higher categories
The junior suite (JS) is a single, larger room in which the living area is created within the same space as the bed using a sofa, two armchairs or a corner seat. There’s no physical separation: if there were, it would be a suite.
The suite (STE) has at least two separate spaces, a bedroom and a living room, often with a second bathroom. Above the suite come each property’s own proprietary names: executive suite, presidential suite, penthouse. There’s no standard governing these, they’re marketing choices.
Furnishing a suite is where bespoke furniture matters most, because the room has to justify a rate double or triple that of a standard double: the perception of value comes from the materials, the proportions of the pieces and the continuity between the living area and the sleeping area.
Table of codes and features
| Code | Name | Beds | Bed configuration | Indicative useful area | Typical furnishings |
|---|---|---|---|---|---|
| SGL | Single | 1 | One bed 80/90 x 200 | 8-12 sqm | Compact hanging rail, reduced desk top, single bedside table |
| DBL | Double with double bed | 2 | Double bed 160/180 x 200 | 14-18 sqm | Two bedside tables, two-door wardrobe, luggage rack, full headboard |
| TWIN | Double with separate beds | 2 | Two beds 90 x 200 | 14-18 sqm | Central bedside table or two bedside tables, double socket on each side |
| DUS | Double for single use | 1 | Double bed | 14-18 sqm | Identical to the double, only the sale differs |
| TPL | Triple | 3 | Double bed plus single | 18-22 sqm | Enlarged wardrobe, three reading lights |
| QDPL | Quadruple | 4 | Two double beds or bunk bed | 22-28 sqm | Double luggage area, scratch-resistant surfaces, certified bunk beds |
| Family | Family room | 4-5 | Two connected spaces | 26-35 sqm | Sofa bed, visual separation, dual lighting |
| JS | Junior suite | 2-3 | Double bed plus sofa | 25-32 sqm | Lounge seating, coffee table, second conversation area |
| STE | Suite | 2-4 | Separate spaces | 35-60 sqm | Full living area, second bathroom or vanity area |
| Connecting | Connecting rooms | 4 | Two rooms with an internal door | 2 x 14-18 sqm | Soundproof door, coordinated furnishings between the two rooms |
The floor area figures are indicative: minimum sizes for hotel rooms measured in square metres are set by regional regulations based on the national 2008 standard and vary from region to region, as well as changing according to star rating.
Superior, deluxe, executive: what they really mean
Alongside the technical codes, portals show a second set of labels that don’t describe the beds but the room’s positioning within the hotel’s inventory. These are internal definitions, not certified by any body, and should be read as a scale relative to that individual property.
The standard, which some rate plans still call classic, is the room the minimum rate is calculated on: everything else is measured from there. The superior is a step above, and that step might be the floor area, a better aspect, or simply the fact that floor was refurbished three years ago while the others are still waiting. The deluxe surpasses the superior in size, view or amenities. The executive is aimed at business guests and can be spotted from two details: a genuine desk, with a top at least a metre wide and sockets within easy reach without having to duck underneath it, and a proper task chair instead of a decorative armchair; in some properties it also grants access to a lounge. Below the standard sits the economy, or small, which often has an internal view or lacks a compliant window to the outside.
Guests who book find this out the hard way. The deluxe room in a three-star hotel on the outskirts of town can be smaller than the standard room of a four-star hotel two hundred metres away, because these labels rank rooms within a single hotel and mean nothing when comparing different hotels.
The principle behind this scale is consistency: if the superior isn’t noticeably different from the standard, the price difference generates negative reviews. The cheapest way to create that perceived difference isn’t to change the room’s dimensions, but to change the headboard, the lighting and the textiles, the elements the eye registers first.
How room types shape the furnishings
A well built room inventory doesn’t come from simply adding up the rooms available, but from a commercial decision about which room types are needed and in what proportion. Everything else in the furnishing project follows from that decision.
In the double room the theme is flexibility: furnishing a double hotel room with separable bed bases, independent bedside tables and sockets on both sides makes it possible to switch from DBL to TWIN in a few minutes, following demand instead of being at its mercy. In the double bed room the theme is perceived comfort, and it’s played out through mattress height, an upholstered headboard and the quality of the reading light. In the quadruple the theme is durability, because that room takes four times the wear of a single.
This is the point where bespoke furniture stops being an aesthetic choice and becomes an economic one: building the wardrobe into an existing recess, sizing the bed frame to the room’s actual width and integrating the luggage rack into the unit recovers centimetres that no catalogue product can give back. We design this kind of solution in-house and build it through a supply chain of selected Italian workshops, with a single point of contact from survey to handover.
Room types ultimately affect the rate plan too. The price of a night in a hotel follows a progression that’s rarely proportional to the number of beds: a triple typically costs 20 to 25 per cent more than a double, not 50 per cent, because the third guest uses less space and fewer services than the second.
Frequently asked questions
What does a double room for single use mean?
A double room for single use, indicated with the code DUS, is a room designed for two people but occupied and paid for by a single guest. The property offers it when it has no single rooms available or has already sold them all. The rate is lower than that of a double occupied by two people, because breakfast for one is missing, but it remains higher than that of a single room.
What’s the difference between a single room and a double room?
The single has just one bed, between 80 and 90 centimetres wide, and is sized for one guest: in most regions it starts at 8 or 9 square metres. The double has two beds’ worth of capacity, either in a double bed or in two separate beds, and needs at least 14 square metres. The wardrobe, the number of bedside tables, the electrical sockets and the light points change accordingly.
What does a double room with single beds mean?
That’s the TWIN room: capacity for two people provided by two distinct single beds, usually 90 by 200 centimetres, rather than a single double bed. It’s booked when the two guests don’t share a bed, for example colleagues travelling together or friends. Many hotels use pushable beds that, joined with a topper, convert into a double.
Why is there a single occupancy supplement?
Because the room is taken off the market entirely even though only one person occupies it. The room’s fixed costs, cleaning, linen, energy, depreciation of the furnishings, stay almost unchanged compared with double occupancy, while revenue would be halved without an adjustment. The supplement brings the room’s profitability back closer to that of a double.
