Gesa save us with booking at the last minute! Even if the apartment is for a family with 2 kids, we were 4 adults and it was very comfortable; every bed was good, the apartment is spacious, the kitchen well equipped and the balcony is the perfect bonus! The bathroom is very small but it doesn't matter... The area is great with bars, restaurants, and everything you need, and it's close to the U-Bahn. I hope renting again if I come another time in Berlin :-)