Hmmm, your issues don't seem to conflict with the idea of 'Villas' or 'Flats' though. You'd still have a room to yourself to style as you wished, just the bathroom/kitchen/family areas would be shared between the students.Um...
I don't think multi dorms would work that well with conflicting styles and stuff, besides, they'd probably keep the exact same buildings.
So single dorms, please.
I don't feel like having multi dorms at all...