We loved staying at Frank’s apartment and would recommend it to others visiting Berlin. It’s well located for public transportation to get you anywhere in the city. Frank’s recommendation of local restaurants and cafes were amazing (multiple visits to Nosh and Mokalola are a must) . The apartment is a lot of fun with all the lights and furnishings, it has everything you may have forgotten or need (toiletries, sewing kit). Can not recommend it enough!