Although the location and flat are quite nice, I don't like the way they treat the guests. After my flight was delayed and the S-Bahn was not driving due to constructions, they charged me € 20 ! euro extra for a late checkin. And for that € 20 euro they were very unpleasant to me while updating them about my delays. Then they have an unnegiotable checkout at 10 am! That's no Berlin time and it ruened the wedding party I had because I had to come back early. Al together I don't like the people who rent out this nice flat, and I hope they will reduce the exploitation of Berlin-enthusiasts. This is not a home away from home, it's a commercial organisation renting small rooms to innocent travelers thinking they get a unique experience.