We chose this apartment because it was in a quiet but easily accessible location. The only sounds we heard were of birdsong. We visited several museums, parks and palaces, all on foot, although public transport is very well organised - much better than our experiences in the UK. There's also a good choice of eating places within say 30 mins.
There is a Spar supermarked just 2 mins away from the apartment, and it has a very good range of products (again, not like Spar UK). The apartment is well equipped, with cooker and microwave, although we just used the kettle, as we were on holiday and didn't want to cook. The washing machine means that you don't have to carry so much clothing in your luggage. The shower is perfect (again better than ours in the UK). The tap water is like mineral water.
Katerina is the most helpful of hostesses, providing lots of information on travelling from the airport, getting to the main sites, helping with finding local amenities, etc. If we take another holiday in Vienna, we would aim to rent this apartment again.