First things first. it's a third flat with no elevator, so you have to be in good shape to go up 63 steps every time got come and go.
The apartment lacks isolation so can be really hot (as was the case) in summer and cold in winter. In addition is located in quite a noisy street, so opening the windows for sleeping is not an option.
Apart from that, well located (if you put thge accent on this, it could meet your needs), well decorated and clean. Easy access to main tourist spots and provided with a superb bathroom.