Well it depends on you... The halls are corridors with bedroom doors on each side, and kitchen at the end. So you're about 15 for a kitchen. And in the flats you are from 2 to 7 per flats and you have one kitchen and you share the bathroom.
Otherwise the halls and flats are pretty much the same!
I've applied to Muirhead because it had been recently refurbished but I would have been fine with Polwarth and Fraser too!
Apparently, a lot of people like AKD (hall)!
I hope it helps!