Alan's and Kasia apartment is the perfect place to stay en Berlin! With the station just a block away it's very convenient. It's quite easy to arrive from either of the airports of Berlin and to move around the city. The communication has always been perfect; I hadn't had the chance to meet neither of them, but Patrizia, their colleague was very helpful with everything! Kasia was also reachable via e-mail, which was very helpful. The place is warm, so it's perfect to arrive after a cold day out! Everything was tidy and clean. We were three staying at the apartment and we never run out of hot water to shower! So that's a plus. You've a supermarket across the road which is very convenient. Alan and Kasia even made an amazing Berlin guide with everything you could need!