Maciej is a friendly, interested and kind host. I stayed in his appartment with my boyfriend for 3 days and it was great. The room is small but clean and you have everything you need (table, closet, little fridge). The appartment is nicely decorated and is suited in a lovely area in Berlin. Prenzlauer berg has a lot of nice parks, cafe's and restaurants! You can park closeby for free and we could park our bikes in the hall downstairs. Maciej told us the best places to go and the communication was very good.