Gin's place was very clean and quiet. The location worked out well for us: we walked to the Opera House every day (about 25-30 minutes), although we could have taken the tram. We got bad information at the welcome centre: the apartment is not on the Underground line (as the lady told us), but is on the tram line at the Laurenzgasse stop. Be aware that many of the stores (including the grocery store) are closed on Sunday, so if you need anything, make sure to get it on Saturday! The city was having a heat wave when we were there, and so the apartment was hot, but the fan provided helped a great deal. Gin is quick to communicate when you get in touch, and we appreciated being able to check in late in the evening since we arrived late.