Our stay was overall great, although there were some low points. The apartment itself is nice and comfortable, with a great little kitchen and a comfortable bed. The unit is among businesses, so people were frequently coming in and out of the building. Two of the nights that we were there, a business was having an event with pretty loud music and people coming and going for quite some time. We turned the sound machine on which drowned out the noise, but if you're a very light sleeper, definitely keep that in mind. Another weird occurrence was that someone tried to enter the apartment. It could have been that they thought they were entering a business, but it did worry me a bit. Other than that, the place was nice and great for a quick stay in Berlin!