We stayed at Netas place for 2 nights - it is spacious and very nicely furnished. There are two comfortable double beds in separate rooms and a big living room, which made it easy to have some privacy for working (Internet works flawlessly). Communication was always very quick and Neta was very forthcoming in taking care of us, when there was a bit of delay for the check-in. There is a very close metro station, Alexanderplatz is only 12 minutes away. Since temperatures had dropped recently, we were a bit cold - the appartment is on the ground floor in an old building with high ceilings, so it is a good idea to pack warm socks for the colder days.