Nice spacious apartment in traditional block near to underground / tram stop and easy walking to central Vienna.
Very clean, comfortable beds and sofa. Good wifi and extra warm heating (manual radiator adjustment needed).
Minor points: Perhaps a bit sterile (100% IKEA, self-check in & check-out with no guest interaction; several apartments together managed by same business); just about adequate kitchen utensils; and a little noisy (vibration / noise from underground train and people walking upstairs).