There’s also another location, with probably 3 beds for the three brothers, a bit later, in the middle of the movie. The 3rd bed of the older brother (also aligned horizontally as well) is on the opposite, right wall. 2 desks next each other at the north east, left to the door. Especially near the end of the movie, there are also some scenes on the boat and the bunks there, I think a 2 story bunk bed.
First I thought that the scene pictured would be a dorm and with 4 or 6 beds as the room looks quite large.
The other scene with the pillow fight earlier is much better, though. Now also on my shiny shorts blog (rating 4).
Main entry, still rating 7 at