I was staying with Peter for 4 days end of April. Peter’s apartment is located next to U2 “Sophie-Charlotte Platz” which gives easy and quick access to the main sightseeings. For those loving soccer, Olympiastadium is few stations away same line. All rooms are modern, clean and spacious enough to accommodate two for a long. Whole building seems to accommodate nature community so no noise, yellings etc. over night time.
Peter was very nice, polite and ready to help.
I definitely recommend Peter and his apartments to stay with.