We stayed two weeks at Frank’s apartment and enjoyed it thoroughly.
It is exquisite and in a quiet and nice neighborhood.
Although it’s summer we didn’t need to use the portable air-conditioner. The living and dining areas were cool when we opened the terrace windows, and the electric fans worked fine for the bedroom and study.
We love the high-end products used and the intelligent door-locking system which allowed convenient access for both of us at all times.
Frank is truly a super-host. We would love to be his guests again if we return to Berlin.