I'm rather a fan of 

[hider=This floormap]
[img=http://fc05.deviantart.net/fs70/i/2011/083/a/3/fa___vale_dorm_map_floor_1_by_11rnolson-d3cdrsd.jpg][/hider]

But it doesn't have enough rooms. What if we add another room to the EFG row and assume the teacher resides upstairs?

In this case, Ken would take 1D