We'd arrived from a long flight and a frustrating time negotiating the route from the airport by public tpt, with luggage in tow, so it was rather upsetting to find ourselves having to get in touch with Amit concerning the apt keys; As requested i watsapp Amit at about 0900 h when plane landed and again at 1115h to say the RER7 train we were in just passed Friedrichstrasse. Both messages without replies from him. We arrived at the apt about 1210h to learn that cleaner had left and we had to back track to a cafe to collect the keys.
That initial fiasco aside, the apt was great n Amit was a responsive host. The main problem we faced w the apt was the failure of the heating grille in the toilet; this could not be fixed till we'd left. We also spent a fair bit of figuring out how some appliances work - dimmer switches, oven, heater, etc; especially challenging for someone who does not read German and from equatorial climes - never had to use heaters! Would like to suggest a simple compilation on how to operate some such things.
Location of the apt is great; Wittenbergplatz station is within walking distance, as are a number of eateries, a supermart (Edeka), n a large dept store (KaDeWe).