I had a month long stay in this apartment. the location was great, the place was clean, and I appreciated Alessa's fast responses.
I'd like to preface by saying that overall my stay here was good! I just want to provide a detailed and honest review of my experience.
in terms of location, it's not too close to any city noise but not too far where you can't reach places easily. as a young woman living alone, I can genuinely say I felt safe in this apartment building, and walking around the neighborhood during the day and even at night. there's multiple groceries within easy walking distance, billa and hofer, and there's a pharmacy nearby too. Tram D is up the street from the apartment, within about 5 minutes, and the metro station line U4 is about 8 minutes in the same direction, very convenient!
there's plenty of restaurants close by as well, with a nice cash only Vietnamese restaurant and bar just up the street, and an excellent asian cuisine stand by the Tram D stop. I used mjam per Alessa's suggestion multiple times for food delivery, it's similar to uber eats or grubhub, although it's all in German so it was a lot of translating...still a useful app when you don't have food in the apartment or don't feel like cooking! be aware that a lot of places are closed on sundays.
some comments: I checked in at 8pm with the hosts aware of this time. after internationally traveling all day, I had to wait past midnight for the laundry to finish with the bedding and towels, also figured out that the fitted sheets I was waiting for while exhausted weren't actually for the bed in the loft. preparing things like this should be standard. there was also a dishwasher full of dishes that I had to rewash most of and put away.
in terms of a long term stay, there were some things that were missing/not ideal. the pan is on its last legs, it's scratched and the handle is nearly broken off (i used it nearly every day despite this). the small cutting boards in the cupboard under the fridge were basically unusable, and a general lack of typical kitchen utensils, there's only one spatula, no baking trays. the tea kettle was completely unusable and gross, although I easily substituted this with a pot dedicated to just boiling water. there's some spices but they're pretty atypical, no regular black pepper.

I worked remotely during my stay, and ran into an issue with the wifi: it is quite slow & simply not fast enough for full time work. it would lag, increasingly so in the evenings, and sometimes completely shut off. thankfully alessa arranged a pocket wifi for me for an additional cost of 25€ which worked out better, although it was still kind of slow wifi. I would split my usage between both wifis to ensure that all my devices would work. I'm very grateful for the pocket wifi because otherwise I wouldn't have been able to work efficiently at all.
something to be aware of, there's no railing on the stairs up to the loft and it's a shaky way up. I split my time sleeping upstairs and on the couch downstairs, the couch is quite comfortable. there's also no hooks in the bathroom for towels. on a positive note, the place was warm (lived here from mid October to mid November) and with plenty of heating options throughout the spacious apartment.
again, overall it was a good stay in this vienna apartment, just with some hiccups along the way. I think this apartment is more ideal for shorter stays overall, but decent for longer stays.