it is 12-16 to a kitchen. the bathroom description is slightly misleading: there are about 15 people per kitchen, all of whom use the bathroom facilities on the same floor. the facilities are comprised of 8 small rooms dotted along the corridors: 4 toilets, two shower rooms and two bathrooms. it really is not a problem. its pretty rare that someone has to wait, theres usually one available. plus you have a sink in your room if you really have to go somewhere and need a wash.