Very large apartment with a great dedicated work space/office for digital nomads or anyone who needs to do some work privately on a computer. Really fast internet for streaming or video conferencing. There is a very comfortable desk chair, and the rooms facing the inner courtyard are generally very quiet. Note, there is some construction going on in the inner courtyard at the moment, but there are only a few workers and their hours are unpredictable. Sometimes it's silent or no big deal, but other days they started hammering and sawing at 7:30 AM.
The bed was comfortable and you don't hear the neighbors. If you keep the windows open for air, you do hear light traffic during the day, but not really at night. Large comfortable living room and really nice big dining table. Note there is no TV. We also really appreciated the excellent entryway with plenty of space to organize shoes, coats, hats, keys, etc. The bathroom was large and has a lot of cabinets for storing toiletries. There is also a big closet with shelves to store clothes and hide luggage. Wonderful for long term stays!
There is no air conditioning, and there is one floor fan. We stayed a month in July, and there were a couple of heat waves. Direct sunlight doesn't hit the windows, and this helps a lot with the temperature. You can open the windows on both sides of the unit for a cross breeze, which is really nice. When the weather hit 94F/34C outside, with windows closed, you could keep the inside temp to about 80F/26C during the day, opening the windows again at night.
Location is fine. No, it's not in the middle of the tourist zone, but you're just a couple blocks from the subway line U1, which takes you to the center in 4-5 quick stops. We felt safe walking around day and night. There are several grocery stores nearby, and even a historic public swimming pool near the subway entrance, which was fun. Overall, a great option in Vienna.