I had an amazing stay !
The room is clean and spacious enough. It's next to a busy road but once the window is close you do hear anything.
The hosts are really nice and help you with everything you need. I stay there for two month and had nice talks with them during the evening. There're often travelling so I was alone with the other roommate who's really quiet.
The location was perfect for me and it's close to Oerlikon train station with public transport from where you can go very fast to the city center.