We stayed at Sebastian's apartment for 10 days and it was perfect! The apartment was the right size for our family of 4 and having 2 bedrooms and a TV in each one was really great for our downtime. it was really clean and the beds are very comfortable. It also has these great blinds that makes the pace super dark which makes it easy to have a good night of sleep. The location is great because it is in a very quiet street, but just a block away from many restaurants, bars and shopping (supermarket, mall, pharmacy etc...). Sebastian is an amazing host, we had questions about locations, trains, restaurants and every time we messaged him, be promptly replied, never more then 10 minutes, very impressive. He was very helpful and nice. We would definitely stay again n his place when we come back to Berlin.