A nice, cosy and warm apartment in a good location. Equipped well and has anything you need (and if you need to buy something, there is a plenty of supermarkets around - a few minutes walk) and if the weather is bad, you can just stay in and watch netflix or play PS4 :)
The place is close to Belvedere, the central station and to public transportation, but basically you can just walk everywhere :)
Thomas was very responsive and helpful.
Would definitely come back again when I'm in Vienna!