The strongest side of this apartment is its location - you literally have to walk 3-5 minutes to get to the Ubahn or the trams/buses. It is very convenient. You can get to the inner stadt in about 15 minutes by bus. The neighborhood is very nice with Spar right around the corner where you can buy everything you might need. If you are into a workout during your vacation, you can easily find several gyms within a walking distance. The cost for a daily pass is 12 euros. I went to the one called fitness 39 or something like that.
Please note that the apartment is on the 4th floor, but as you may know it's the fifth floor in Europe and there is no elevator in the building. The apartment is located in the solid old building. There are no keys to the apartment as there is a lock with a pin pad which is convenient. We had a difficulty entering the apartment the first time and the owner had to reset it remotely after we wrote to him through a messenger. The owner was swift to respond which was nice. Neighbors are not noisy and we had a good night sleep. There was no need for an A/C since it's a building with high ceilings and thick walls, even though the temperature reached 30 degrees most days during my August stay in Wien. The place was clean with all the necessary kitchen and bathroom utensils. We even had little sweets when we got there. If you are into cooking, you will find everything you might need for it. As a nice bonus to your morning, you will find a working coffee machine which prepares delicious coffees!