Clean, good service (I had no problem speaking English-only). Bikes are very convenient for getting into center. Taxis were also easily available via a request to front desk. (It's a long half-hour walk to the center of Muenster, but definitely do-able if you've got the time).
Rooms are very hip, clean, quiet. Really nice toiletries, but the bean-bag chairs are a bit silly!
I'd definitely stay here again.