Johannes & Johanna 's place is really great! We were very pleased to stay there 6 nights.
Bedrooms: Beds are very good and there are lot of space to leave your things.
Livingroom and kitchen: There is plenty of room to cook and have dinner, Kitchen is well-appointed and if you really think, there is something important missing (normal daily use things), don't hesitate to ask! They are very helpful!
Overall: The place is clean and light with good materials and bathroom is spacious.
The location of the place is VERY central, you can walk very easy to many famous places.
We bought Vienna week card (wochenkarte), because we wanted to travel all around and little bit further off the center. (Wochenkarte works seven days in busses, subways and trams (it's valid always from monday to sunday, if you travel Vienna shorter time or eg on friday, think about other available tickets).
There is very good grocery store around the corner and you can travel from and to airport also easily by airport bus. It stops just around the corner. There are also different kind of restaurants nearby, if you want to enjoy dinner out!
We really recommend this place for travellers, families and smaller groups! We also like to thank Johanna and her father for very good service and fast, easy communication!