The flat is located in the central district Mitte, so you can get to all the interesting neighborhoods in max. 30 minutes. The next U-Bahn station (Stadtmitte) is right around the corner. The downside to the location is that Mitte, except for a few sightseeing attractions, isn't the nicest neighborhood to hang around in.
Christian and Rachel are easy-going hosts. They gave us very precise directions on how to reach and get into the flat.
The room had everything we needed. The bed was comfy and the room was quiet as advertised. Except for some dust on the shelf – which didn't really bother us because we didn't need it – the room was very clean and tidy upon arrival.
All in all you definitely get your money's worth with this room.