This is a terrific place very conveniently located to a major rail station, several trams, supermarket, and within a pleasant walk to the old city. It is very modernly appointed. Ideal for two people. Check in and check out was very easy, hosts were not required for that. Hosts were easy to contact, though, and were very helpful in resolving a minor problem with the shower. The flat is well lit, but was rather warm despite it having a basement orientation. However, it was in July following a very hot week immediately preceding our stay. And there were a number of small fans in the flat that helped with air circulation. Would definitely stay here again on another visit to Vienna!