I did stay one month in this place so I will try to give you the pros and cons of it :
Good things :
- Location is good. Out from hyper center and close to metro station. Walking distance from every good spot in porto.
- Very calm, apart from your airbnb neigbourgs you won't hear a thing.
- Window and light is spectacular. There is an orange tree right outside and gazing below this view is really relaxing
- Good bed matress, 2 couches one is really confortable to sleep on
- Shower is really wide and nice
- The celling is very high and the impression of space is nice
Not so good :
- Internet connexion comes and goes. They should fix that though.
- The kitchen is not super equiped. So if you think about cooking that should be kind of basic.
- Decoration is a bit cold (look a bit like an ikea store)
Overall it is a good place to stay if you want to have a quite, spacy stay in Porto