We had a wonderful time in Vienna!
The A/C was much appreciated with July 2022 heat waves and temperature rising up to 37 C (almost 100 F!) in the city.
The location is simply perfect; this apartment is on the top floor, with beautiful views of the Operahouse and the Southern tower of St. Stephan's. Café Aida is right below the apartment, and there are many dining options too. Downstairs, there is a souvenir shop with a nice variety of reasonably priced items. There are also a couple of grocery stores and bakeries nearby.
The apartment is full of light and is very spacious. It has a fully-equipped kitchen, with a coffee machine, a (tiny) kettle, a microwave, and a refrigerator. Having a washing machine was great as we did some laundry and washed the bed linens/towels too.
The room with the full en-suite bathroom (with a bath and two sinks) seemed spacious. Our kids used it. The A/C unit was not working properly at the time of our stay, though.
The other bedroom had a shower and a sink. The A/C unit in this room and the living room worked properly at all times.
The second toilet was in the powder room.
The room upstairs was used by the (still very young and fit) grandparents who only stayed with us for a few days. The A/C didn't work there when temperature hit the 30C mark, so make sure to keep it on if someone is using the upstairs.