Capeto
Google
If you had the chance to read my review of the "Nachbarbox" , also a small fast (finger) food restaurant a couple of meter away from this one, you will be amazed that they belong to the same owner meaning the quality here is also not an exception. More formal, also small but food is fantastic, they go to the detail, the presentation and the service.
Talking about prices is Switzerland is reactive, as this country is expensive for everyone. I do not want to say it's an expensive restaurant but it goes according standard's of living and here you'll pay what you get
I just can say... have a visit, you will not regret it.