Roost will reserve you and your roommate a hotel room with at least 2 beds in it. One bed is reserved for you (and if applicable your co-traveler) and one bed is reserved for your roommate (and if applicable their co-traveler). You are only permitted to share a bed with your co-traveler.
Due to changing hotel availability, Roost cannot make any guarantees about the size of your bed or the layout of the beds in your room. However, beds will usually be full size or bigger.
Additionally, your hotel room may have a (pull-out) couch or the option to rent a cot. You may sleep on the couch or cot as long as your roommate agrees. If there's an additional cost (i.e., renting a cot) you are solely responsible for paying for it.