This apartment is very well located, an easy stroll (or quick tram ride) from the Imperial Palace Complex and Museum Quarter. Our family of three was quite comfortable in this space, it has a fully equipped kitchen for preparing meals at home, but also many nearby options to eat out. The unit complex is very quite.
It is not modern (if that is important to you) and yes it does have quite a few stairs to climb as others have mentioned.
The host was very friendly and organised, and provided suggestions on things to see and do. He replied promptly to all our messages. He was especially helpful with detailed instructions for public transport to the apartment, which was very helpful.