The apartment itself is well located in the center of historic Porto, close to everything within walking distance. It's very spacious and well lit. It has a trendy "thrown together" vibe. It's very sparse on amenities considering the size, relative to other Airbnb's we stayed at in Portugal. (Not enough cups, towels, kitchen paper etc)
Most importantly, we had several communication issues with the host.
The owner, Luís, did not send any instructions or details prior to our arrival. He also did not respond to my messages on the site. I called to inquire and he apologized and said he was travelling at the time, and his partner Rui would handle the communication. Throughout our stay it wasn't clear if our contact person was Luis, Rui or Lucia the housekeeper and who takes responsibility for the guests. To me that felt unprofessional.
After our arrival we found that the baby crib was broken, and that the shower was missing soap and shampoo. We contacted the host and these issues were indeed sorted out (however this was not communicated, we found out that the baby crib was replaced and the toiletries added when we got back to the apartment)
In addition, during our stay and while we were away from the apartment, an unopened chocolate gift bag that we left in the kitchen was opened, rummaged through and eaten from.
A few things to note if you're planning to stay here (which again weren't communicated to us)-
The building is located at the corner of a major street and and an alley. The listed address is the alley - and cab drivers might have issues finding/driving there (ours did not agree to enter the alley). It's best to direct them to the major street instead.
When checking out, make sure that the building door is open and unlocked before exiting the apartment. If you leave the keys in the apartment, you might lock yourself in the corridor with no ability to exit the building. This happened to our upstairs neighbors and we had to rescue them.