I had a pleasant stay at the Hotel Seegarten in Zürich. It is conveniently located on a street that is very near the lake. The single room I stayed in was rather small- especially the bathroom. You could sit on the toilet and brush your teeth at the same time on the tiny sink (actually the tiniest sink I have ever seen in a hotel room!). The room was very quiet and I had a very good sleep, the bed, bedcover and the sheets were of a very good quality- as I think in all hotels in Switzerland!