due to our specific situation, Julia was quite flexible in terms of check-in and check-out hours, which helped us a lot during our stay.
Communication-wise, we did not have any problem and she was pretty responsive and fast in replying.
Location is fantastic, I knew the location beforehand due to my previous visits in Berlin and I would suggest everyone who is considering a central location that has good connections to different transportations and/or wanna be closer to nice pubs and restaurants, well, as well as the clubs, the location is just top.