I really enjoyed my time in Porto in this great apartment. It had everything that I needed for my 2-month stay.
The location is great, as it's quiet and very close to bus stops & a Metro station which will get you to the city center, Estádio do Dragão, or any other place you might want to visit. You can also walk to the old center which, depending on where you go exactly, will be about a 30-minute walk. There's a big grocery store within a 5-minute walk and other stores and services you might need are within walking distance.
Yves & Ana were great hosts. Very responsive and always available in case I had any questions. They also offered regular cleaning (thanks a lot Paula) which was very appreciated.
If I'd have to come up with one downside of the apartment, it would be that it gets quite dark as it is in the back of the building. But it didn't really bother me that much. I had some problems with the wifi at the start, but those were fixed simply by repositioning the router.
Overall I'd definitely give the apartment and hosts a 5/5. Thanks a lot and I know where I'll stay in case I'm coming to Porto again.