This places is located in a quiet neighborhood—we often slept with the windows open and never had any issue with the noise. The place is very stylish and modern with a bed up top and below. My partner and I stayed there and could not imagine 4 people staying in this tiny apartment. The top bed was very creaky so we slept on the bottom bed. There is not a lot of space for luggage either so again I think it is more comfortable for 2 people. The shower was great and the soaps provide were great quality. The kitchen was well stocked and it was nice to have a good size fridge. It was very close to the S-Bahn and a few cafes and restaurants. We definitely enjoyed or stay and recommend it to other visitors of berlin.