Mark is a good host and took care to accommodate us well. He is responsive and reliable.
The apartment was clean, organized and well equipped. It's a very central location and well connected to public transport (though we walked everywhere).
The downside was the washroom which was very cold to shower in (it was December) and had a curtain instead of a door. Another irritating thing is that there is a nightclub in the basement of the building. You don't hear the noise but the people going there are sketchy and a guy barfed next to us as we were passing by.
For the price we paid the apartment is a good deal.
All in all we had an amazing vacation and would stay at Mark's place again.