My daughter and I had an amazing week staying in Thomas' apartment. It is very clean and spacious. It has all the amenities you could need in an apartment and even supplied a booklet on explaining how all the appliances work and local amenities such as supermarkets, coffee shops and restaurants, a very useful booklet. It's those little touches that make all the difference, especially the welcome bottle of Prosecco! We used the underground to travel into the centre of Vienna which is only a few stops away and very regular service.
I would definitely recommend staying at this apartment and will do again if I return to Vienna.