From the beginning Klaas was carrying for us. He sent very detailed instructions on how to get to his house. When we arrived he offered us a tea and briefly told us about neighborhood, transport, places to visit in Amsterdam and other things good to know for tourists.
Even if the apartment located on the outskirts of the city it takes 30 minutes in tram to get to center. Tram/bus stops and quite good supermarket are in 3 minutes of walking which is nice.
We definitely recommend Klaas and his room!