Everything was perfect!
Martin picked us up at the Metro station and helped us out a lot!
He is a very nice guy and really enjoyed staying at his place. His apartment is located close to the center. You can either walk (20 min) or go by Tram (5 min) to the city center. We felt very comfortable staying with Martin. Since I had to work during the afternoons I needed some space. So I worked in the living room which wasn´t any problem with Martin.
Anytime again!