Well, I really don't know what to add to all the previous reviews. Unfortunately, the highest rate here is only five stars, in reality it's more like 10 out of 10, because everything was excellent during our stay.
The apartment is perfect: it's new, super clean, bed is very nice, bedding and dishes are excellent, and the amount of utensils is enough for those who prefer to cook by themselves. It is ideal for a single traveler or a couple. It's located in a very quiet area, and it's a pleasure to come back there from a crowded downtown. It takes 20-25 minutes from apartment's door to Stephanplatz if you use metro.
Alexander is amazing, very friendly, easy to interact, always ready to help with everything you need, and he fully deserves the name "super host" (and even more). We visited Vienna during our New Year vacation and we spent unforgettable New Year's Eve at the excellent restaurant he generously offered to book for us in advance. He provided detailed information about the city, museums and transportation, and due to his advises we saved time and money.
It was perfect Vienna experience for us. We definitely recommend the place and the host and we will be more than happy to stay here again.