Depends on your budget...you can get one room at any of the hotels since you can have up to 5 in a room with a roll away. So RPR will be the least expensive. You can also get a deluxe room at HRH that has a study with a sleeper sofa for some extra room and the PBH has the largest rooms so then you can get one with a roll away and then have a bit more room to move around.
They also have kids suites, which are a bit more, and those include 2 rooms with the extra room themed for the kids.