Comfy bed, clean shower facilities, great location (very close to Zurich HB), and very patient and quick to respond host (I tried using my broken German with Katie throughout my stay to challenge myself).
The bar downstairs plays Swiss folk music from 20:00-24:00 though, so remember to bring ear plugs if you're very sensitive to noise or return to your room after midnight. Wasn't a problem for me as I had a very late appointment.