Maria was very welcoming and helpful, giving us detailed instructions to the apartment even before we left (she also booked us a taxi for when we left!). She met us there and showed us around, offering a nice treat of pastries and port wine which was much appreciated.
The apartment itself was in a great neighborhood- super close to everything you'd need. The area is beautiful; we spent many hours just walking around and exploring. The apartment was well cleaned and maintained while also modern and comfortable.
As people have mentioned, if you're a light sleeper you might be annoyed because there's bars about and the apartment is right above street level. But there are fans provided and also double-paned windows that help.
Overall, it made our Porto experience truly lovely, and Maria was always very helpful and responsive to any questions we had. Would 100% book with her again.