Martin was a very cordial and helpful host, who spent time telling us about various places to visit, as well as tips on where to eat. The studio is spotlessly clean, well appointed and the beds are very comfortable. Hadn't realised that the studio was on the ground floor, but that wasn't necessarily a problem, as the neighbourhood seemed quite safe. Potsdamer Platz is indeed very accessible, as mentioned on the listing, but it is rather more than a five- minute walk - unless you are an Olympic athlete!