We had a great stay in Porto.
The appartment is in a great location, right next to the center (walking distance), with parking and many restaurants around.
On the negative side, it is located on a very noisy street, on the ground flour, and we found it difficult to sleep at night with a dog barking all nifht next door. Also, the appt was only superficially cleaned up. There were fingerprints everywhere and our foot were dark in the evening. There are also a number of things missing in the appartment and for that price, I was expecting a bit more attention to details .
Overall, it remains a pleasant experience, but in this category and for that price, I expect and have always experienced better service.