Our stay in Erez's apartment was great. He wasn't in Berlin so he arranged to have someone else wait for us with the keys. The flat was clean and really well equipped, with all the necessities (and beyond). I was travelling with a friend and we really appreciated the 2 beds (one real one, one comfortable pull-out couch). The location of the flat is perfect, in a very interesting neighborhood, with lots of cafés and an amazing atmosphere (especially nice of you are vegan). The kitchen is functional and a good size. The bathroom is a little small, but not unbearably so, and the shower works great. The only thing I'd recommend taking into account is the fact that if you are a light sleeper, you might want to pack some earplugs and a sleeping mask, as there can be some noise at night if you leave the windows open, and in true German fashion there are no shutters (but that's not Erez's fault!).