Upvote:2
This depends on the area you're booking your hotel at. For example, the vast majority of US hotels only post rates per room, not per person. So as long as room max occupancy limit is not exceeded, your price will not change.
Same happens even in Europe if you are single, but try to book a double room/room with a double bed. Those rooms are typically priced for two people, but they will not give you a discount for one person. Thus you see no price difference whether you book for one or two. Could be the same case with your private housing.