The whole team (we were in touch with Goncalo, Gabriela and Diogo) was very nice and helpful :) they gave us lot of tips what to see, where to eat, etc. so we enjoyed Porto very much. They were in touch with us throughout the whole stay.
The apartment itself has a good balcony so you can enjoy your meals in the open air. We think the view could be better if it wasn't for the buildings on the left side.
The apartment is rather small. It has enough space for a couple but it could be too small for 4 people.
It's nice to have a kitchen, so you can preapre a breakfast or supper on your own. It's harder to make a dinner, as the kitchen isn't equipped with any spices, etc.
We've read a lot about the roosters in the neighbourghood before we decided to book the apartment. It wasn't a big problem for us - we woke up every night/morning, but we fell asleep right away. We had all the windows closed, as we visited Porto in May, although balocny doors could be better sealed ;) Having the windows open during the night could be problematic. Otherwise, the roomsters are ok ;)
The localization is quite good, we didn't use public transport. Coming back to the apartment form the centre is an uphill road, but you can take it at your own pace and it's really nice to admire the views along the way :)
In total, the hospitality was 10/10 and the team was very nice. In our opinion the apartment itself wasn't perfect, but good enough in all respects.