First of all, the apartment belongs to the 'concierge', a group that owns many many apartments in Porto. As a result, in order to get our key we had to go to the central office that was not close to the apartment. However, that was just a detail.
The most important issue had to do with cleanliness. At first sight, the apartment had been cleaned (towels rolled as clean, sheets tucked in, no garbage in the bins etc). However, we soon realized that this was not the case.
The towels were dirty (mascara stains), the sheets were full of hair, the surfaces had dust and crumbs, and the toilet had hair on it, i.e. the apartment had not been cleaned, it had just been tidied up.
We communicated with Joao who responded very fast and apologized for the inconvenience. He arranged for cleaners to come and properly clean the apartment within a couple of hours. Indeed, when we got back at night the apartment had been cleaned, properly this time.
Besides the cleanliness issue, the apartment is comfortable, with a really nice shower with warm water and large windows in the bedroom and living room, providing plenty of light. The location is also really good, 10 minutes walking distance to the center. We couldn't find any forks and knives but we didn't really care since Porto has hundreds of great places to eat. Other than that, the kitchen was fully equipped, the sofa and bed were rather comfortable.
All in all, this apartment is a good value for money and I sincerely hope that the cleanliness incident was an unfortunate coincidence and not a standard practice of this agency. In the times of covid, cleanliness is of primary concern. The prompt reaction of Joao was really important for us since we would have to change apartment if it wasn't properly cleaned.