This apartment is really good. We live in London and came to stay here for a couple days. Firstly, the apartment is MASSIVE (compared to a 1 bed in London). The shower is lovely and big (although the host could alter the glass surround to stop water splashing further out). The kitchen has everything you need inc dishwasher (and tablets!). Towels are provided which is great. Value for money, the place is spot on.
As for location, you are a 20 minute walk into the centre of Vienna. 3 minute walk away is a train station if you prefer (public transport is cheap and quick). Also by the station is a hofer (Aldi equivalent) which comes in handy.
1 minute round the corner of the apartment is pizza mari restaurant and takeaway - we had food here 1st night and it was great.
I’d recommend a short break in Vienna in winter, or a long break in summer. It’s a beautiful city.