Stefan's apartment is everything that the pictures promise. It is modern and clean, compact but with plenty of space and amenities for 2 people. It is in a brilliant location, really central - you can easily walk to the Nachtmarkt, where there are loads of cafes and fresh food stalls, to the main museums and MariaStrasse is great for shopping. It is also close to the subway, which is really easy to navigate. Only 2 slight problems - the bathroom door was very difficult to close, which was a bit of a problem in such close quarters and we had a few problems with the code for opening and closing the door. Although we didn't meet Stefan, he was easily contactable and solved all the access problems very quickly. I would highly recommend this apartment for couples visiting Vienna