"I mostly used this as a place to sleep but it seemed like a good place to also work if one needed. So my four star ratings are really only because I didn't have too much interaction with staff or amenities.
The hotel is well located with plenty of things to walk to and a tram line right on the street. The only thing I would warn is that with a heavy bag it is something of a long walk to Zurich HB station. Of course if you want to do the tram system you can, but there is not a direct connection. This was the only inconvenience I found. That said, the walk is 10-15 minutes so if you are fit it is totally fine, and actually it is pleasant to walk along the Sihl River.
The rooms are really cool and I rate it as one of the best I've stayed in recently, comfortable bed and the night shutters make it dark dark even in the middle of the day if you are the type that likes sleeping in darkness only. Really great! That said, once again, if you are a specific type of person that is a technophobe I would probably avoid. I'm sure you can interact with a clerk or concierge like any hotel if you seek that out but you need to seek it out. Everything is self-serve (including check-in/out) if you choose that. (there are people available to help, just to be clear, but you don't need to interact with anyone)."