I am going with 4 people which one do you think is the best type of room for 4 people because when I book sometimes it says how many people can fit and sometimes not.
For 4 adults any of these would be pretty crowded-esp for bathroom & storage space. With kids, make sure the specific room has two pulldown Pullman beds. Our interior did not, but some do. Make sure you look at the cabin categories or book through a Carnival PVP for the best advice
I'm pretty sure that the third single bed drops down off the wall and partially covers the what little open space there is in the cabin. Personally would probably not try to do this unless the third person was a small child. You would for sure have to fold that bunk up during waking hours. The cabin and bathroom are both quite tight already just with two people . . and then there is the luggage, oh my.