Sebastian's place was awesome and we had a great week there. Although we never met Sebastian the entire process was very smooth. Sebastian ensured that we could pick the keys from his friend, who also came and briefed us on the apartment. There was a note with all the relevant information waiting for us. The apartment is extremely cozy and homely. It has everything one would need. If someone is traveling with kids (3-5 years) Sebastian's place is perfect since his kid's room has a whole range of toys. The location of the apartment was comfortable for us (we were visiting an office on Ku'damm). There was a nice bakery for morning breakfast couple of minutes from the apartment. The neighborhood is safe and the apartment building also has sufficient safety measures in place. Would definitely recommend Sebastian's apartment.