Duc Son is a great host. Very friendly and check in to the apartment was fast and easy. Communication was very fast and easy also. The apartment was very close to Alexanderplatz and you could easily walk there in 15 mins! We got the tram which was just 2 minutes from the apartment (very convenient!) Over all the place had everything we needed and it was quite spacious and very clean! Our only issue was with the wifi... we really didn't get a solid connection the full week we were there. I think if the wifi would have worked for us then it would have been a perfect stay! Thank you Duc Son for your hospitality!