I came to Vienna with my parents for 3 days. We stayed at Harry and Maria's place and we absolutely loved it! You can't get better location in Vienna. Walking distance to the river bank/metro (5min) and the main square is only 10min away which was ideal for my parents who are in their 60s.
The apartment is spacious (much bigger than we thought) and well equipped.
I absolutely loved the bookcase with 100+ books on different topics and in various languages.
It felt like staying at 'home' not at rented apartment.
Bonus point - secured parking space included.
Harry and Maria were great hosts answering all of our queries straight away and giving us helpful tips on where to go and how to get there. We were welcomed with a handwritten persona welcome note and local sweets :)
Would definitely recommend it and will be coming back next year!