We had such a great stay in Martins apartment. Very nice place! So central, walking distance to the center of the city, Hundertwasser House and train stations to anything futher away. It is close to a busy road but Martin was so nice and had bought earplugs for us, and with them it was easy to sleep. Bedroom was much bigger, than it looked in the pictures and it is underground which was very nice, as it gets very hot inside in the summer. We lived in the apartment a week and cooked dinner in the kitchen several nights, there is no oven but microwave and pots and pans and everything. All in all a great place to stay in Vienna!