At first we were having some problems with the heat since there is no A/C but that was an irregularity in Berlin at the time of our stay. We stayed about a week and the cold days were fine but on hot days there was little to keep us cool. We come from Puerto Rico so we're used to at least sleeping with ceiling or regular fans during the night, as it can get very hot as well. Definitely could use a fan or two. The rest of the apartment is functionally great and the restaurant below Honigtopf is superb in every way. Being close to Innenstadt Berlin is very comfortable and the nearby Penny grocery store is super convenient as well. Definitely had a good time but the place could have been cleaned better before we arrived. Below and behind the bed was full of dust and the ceiling on the bathroom had dust hanging. Overall, we had a good stay during our time in Berlin.