We loved our stay here! Experienced landlord (new to Air BnB but has been using other sites) was easy to communicate with prior to our arrival and during our stay. The best thing about the apartment: it is bright and airy, with lots of natural light. Back door opens out onto your own terrace--How many city flats have THAT?! Kitchen has everything you need. I love when you check in and the host has a couple coffee packets for the morning and soap at the bathroom sink; here there was also a salt shaker and salt, dish detergent, a small shampoo...
The location is great. We chose it because we have local friends who live in the area. They recommended just getting a car company from the airport--25 € which is what we paid for public transportation from Orly to our apartment in Paris last month. Once at the apartment, the tram stop is at the end of the block--how convenient! In 15 minutes you can be in the city center. Around the flat are 3 grocery stores, a pharmacy, a store with makeup/cologne etc. There are also city pools - one indoor and one outdoor - about 5 blocks (or a tram stop) away. We got a month pass for 22€ each.
I'm using the pool because I'm still doing therapy for a bad leg break 4 months ago. This flat is the first we've had in 4 months of traveling around the world that has NO steps to get into it. Not one. And the elevator is "full size". (There are 2 steps out to the terrace.)
(BTW some outdated Vienna guide books say the trams and buses are inaccessible, but this is no longer true. While there are still some old trams in use that have 2 steep steps into them, just wait for the next one, which will be new and have no steps. :) )
We will definitely be back to Vienna next year, and we will definitely stay here again.