Sometimes it's location, a room facing a busy street or one facing a quiet park. A higher floor vs a lower floor. A renovated vs non-renovated room. A corner room vs one near the elevator. Sometimes you get free Internet or free breakfast (at places where breakfast is otherwise not free), but that's more tied into status. Like you I don't need a lot of space, but an upgrade from a standard room to 1 bedroom suite is great if you have guests coming over.