We really enjoyed our visit in Vienna. Guido's apartment is nice, clean and situated in a very good location. The tram is very close (about 100 metres) and you can easily reach subway and all interesting tourist attractions. Our group consisted of six people (4 adults and 2 children) and we had enough space for normal daily activities. Contact with Guido's and apartment's manager was also excellent. I truly recommend Guido's apartment.