We really enjoyed our stay at Maria's apartment in Porto. It was easy to find, self-check in, large windows making it bright and airy, and had a really central location!
There are a number of restaurants on the same street, which is very convenient, but obviously means there is some noise at night, something to be aware of if you're a light sleeper. However, we slept with the windows open and found that the noise didn't really bother us too much (especially after a few glasses of port!)
We thought the bed was comfy, but could do with better pillows, as each side had one regular pillow plus one large velvet/corduroy cushion, and the bedding itself was clean, but a little faded.
However, none of these things stopped us sleeping well!
As mentioned in some of the other reviews, the shower could do with updating (maybe a new shower head to improve pressure?).
Overall, we really enjoyed our stay and the apartment served us well as a base of operations for exploring this beautiful city! Would stay again :)