Dan's apartment is really close to the city centre. Had a great stay in Vienna. The apartment is spacious and confortable. Clean and tidy. Dan allowed me to self check-in, which I found very convenient. I highly recommend this apartment. As minor drawbacks: 1) the apartment is somewhat noisy at night (you can hear the traffic); 2) I would have really appreciated an additional key (as we were 3 and sometimes we left the apartment separately); and 3) single bed pillow is uncomfortable! But, once again, the apartment is great and these are mere details! Thanks Dan.