Markus was a very accommodating host, I arrive 1.5 hours early and checked out 1 hour late. He was very helpful on giving directions to places where one would want to go. Apartment was 5 minutes walk from Gare Cornavin train station, 8 to 10 minutes away from Old town or UN HQ. Bus station for bus 8 is about 50 meters away. Very convenient location. Ideal if you want to spend a couple of days in Geneva.