The apartment building is easy to find and close to a tram station which can take you to the center in two minutes.
Checking in was quick and easy also, Oliver couldn't be there but his brother let me in and showed me around and briefed me about the neighborhood etc.
The apartment was clean and spotless and is a perfect size for a single person or a couple.
Oliver and Raphael are excellent hosts and I would happily recommend this apartment to anyone who was going to Vienna for a short holiday!