I stayed at Mario's place in early June for two nights and had a great time. The apartment is small but uses space very efficiently and has large windows with a nice view. The apartment's location was great! Very close to the train station, shops, resturaunts, and public transport. Mario is very responsive and accomadating; he even had one of his friends meet us at our train and walk us to the apartment! TIP: if you visit in the summer, be sure to bring your swimming gear, there are several places to swim in the river/lake within walking distance of Mario's place. Will definitely stay here again if I'm in Zurich.