Although I travel frequently, staying at Heidi's apartment was my first Airbnb experience, and it was overwhelmingly positive. With the instructions given, the check-in was flawless. The location is convenient: a short easy walk to the Karlsplatz U-bahn station, right by two major tourism spots (Karlskirche and the Nachtmarkt), and walking distance to many others, weather permitting. The mixed use neighborhood is interesting, not posh, seemingly safe, with a strong student vibe - and cheap eats - from the nearby TU Wien. The building exterior and foyer are ... uninteresting and tired, but I don't care because my view from the apartment is nice. The Billa grocery market right by your doorstep is a great asset. Even if you don't intend to cook much (like me), getting some juice, milk, coffee, croissants/bread or eggs for breakfast is great. Or even band aids after forgetting one should NEVER take new shoes on a trip. I did appreciate the elevator, so I did not have to schlep my suitcase up three floors.
The apartment is a great option for an individual or a couple to stay, even for several weeks. The online photos are accurate. It was perfectly clean, the wooden floor finish is great for allergy sufferers, and the linen and towels were spotless. It's pleasantly decorated, minimalist, uncluttered, airy. The bedroom is ample, an armoire and two night tables are provided, and the bed itself is good. The room with the bathtub/shower, sink and mini-washing machine was functional and spacious, with a window to the inner courtyard. The toilet is in a separate adjacent room, not cramped, but the privacy is a bit illusory because its window opens to the adjacent bathroom. The washing machine was quite welcome so I could pack fewer clothes and return with mostly clean ones. And quite handy - my return trip was interrupted by bad weather, and I had clean clothes to wear overnight. I saw no clothesline to hang my laundry to dry. Since I was alone, I had plenty of empty hangers and chair backs to set my wet shirts and underwear all over the apartment. (My wife would not have approved.) The kitchen (hall-style) was quite spacious, well lit, with a large window to the inner courtyard letting in plenty of sunlight. There is even a small table with two chairs, plenty of counter and cabinet space, pantry, a decent fridge, some pots and pans for the 4-burner gas stove and oven, and a good assortment of glasses, mugs, plates, silverware, steak and cooking knives. A good kitchen, early 1980's vintage. I liked the modern convenience of the pod-style espresso maker.
I do want to implore you to make your apartment perfect by providing a small microwave oven that fits a dinner plate - it's the 21st century in a developed country. An 18 liter, small-footprint unit in Vienna goes online for 60 Euros at Saturn. Since I reckon that I paid about 20 Euros/night more than you normally charge, there's your margin for the purchase! There's plenty of room on the counter by the espresso machine for it. Not staying in a hotel room, I so very much wanted to bypass the line at Starbucks by making my morning latte and drinking it along with a croissant from Billa, for 1/3 of the price. Normally, I'd pour the milk in the mug, heat it in the microwave for 1.5 minutes, add the espresso and sugar, done. Instead, for the first time in 30 years I had to heat the milk in an enormous pan on the stove, watch it for 5 minutes before it boils (and of course it did the first time). Then clean the pot wasting ~ 8 liters of water. Not fast and not green. And forget about heating the croissant - fire the oven just for that? Also for the first time in 30 years, I had to heat leftovers in a pan. Being tired and hungry after a long day of meetings, or walking all over the city, do you really want to search on the web for how to reheat that tasty leg of lamb from last night at the Greek restaurant? No, you want to put it in a plate, zap it for 2 minutes, pour your glass of wine, and relax. Instead, you give it a try at the stove and resign to dinner with half the food almost burned and the other half cold. It's a vastly inferior alternative. Yes, a hotel room would have neither a microwave nor a stove. And yes, even I laughed at my clumsiness, but it does not need to be this hard. Please?
Next time I'm in Vienna, I look forward to seeing a microwave in your list of amenities, and requesting to stay if it's available and you'll still talk to me. It's a great property.