Great location for experiencing the Brunnenmarkt and Yppenplatz. Many food stalls for authenticate Viennese, Mediterranean and Middle-eastern fair. Easy to get into the inner ring with CityBike Wien or Trams.
For those looking to do day trips from Vienna I wouldn't suggest this location as it's not easy to get to Wien Hauptbanhof, but for those looking to experience the inner ring, this is a great location.
Getting access to the apartment is easy and contact-less, same with checkout from the apartment.
I only experienced two inconveniences from this apartment:
1) Light enters the bedroom in the morning which can disturb sleep. Good face mask helps this, but don't count on the curtains.
2) The toilet is very odd. You WILL experience issues with ventilation when doing your #2 business as the toilet is not your usual fair. The ventilation system is inadequate for helping freshen the air.
Lastly, the location to the apartment is a bit of a walk from the metro line 6. So take that into consideration for getting to/from the Wien airport or major train stations(Westbahnhof, Wien Hauptbanhhof, Wien Meidling)