# Introduction to rooms in Salto Nebula Hospitality > Find out what rooms are in Salto Nebula Hospitality and how to manage them in this short introduction aimed at hotel managers and owners. ## Descripción general {#overview} A room is a sub-grouping of access control elements within an installation. A common use case is an individual hotel room, but a room could also be a managed apartment or suite within a larger hospitality complex. Rooms allow for easy management of guests who need access to the doors that belong to their own room, as well as access to communal areas of the property. ![Rooms list](/images/rooms.png "A list of rooms in the Nebula Hospitality web application") {.border} ## Key room concepts {#key-room-concepts} These are some of the main points to consider when creating and managing rooms: - A Nebula Hospitality **manager** or **owner** creates and manages rooms, including the access rights and guests that belong to them. - **Rooms consist of guests who are keyholders only**. Guests have no management permissions in the system. They are given access to doors and assigned physical key cards during the check-in process. - **Guests must be added to a room using the check in functionality**. Once a room has been checked in and its status becomes **Occupied**, you can then add or remove guests within that room. The last remaining guest of a room cannot be deleted until that room is checked out. Once checked out, the room's status changes from **Occupied** to **Vacant**. - **Guest keys in Nebula Hospitality are physical key cards**, encoded using an encoder at the time of check-in. You can however assign other key types, like digital keys, to non-guest users in the system, for example staff users. - **Access points can be either common to the installation or specific to the room**. When creating rooms, it's useful to consider that there are two types of access points that can belong to the access plan of the room: 1. Access points that are specific to the room, such as the guest room door itself. 2. Communal access points within the installation, such as the main entrance, a gym, or car park. - **Room access is defined by the manager** and cannot be made more permissive by anyone at the room level. Access permissions can include access points that belong to both the installation and the room. - **Stays can be updated after check-in**. You can change the checkout date, move a guest to a different room, or update communal access rights at any point during an active stay. See [Editing a guest stay](/nebula-hospitality/user-guide/manager/rooms/edit-stay) for details. - **The platform automatically checks out occupied rooms when the scheduled end time passes**. If a guest wishes to extend their stay, the stay must be updated before the original end time is reached. See [Checking out](/nebula-hospitality/user-guide/manager/rooms/check-out) for details.