This place is an absolute hidden gem. It is cute and cozy and has everything you need. Despite of being right next to one of the biggest metro/train stations AND main road, it's absolutely quiet, because it's situated at the end of an alley in a local neighborhood with nice people (mainly elderly). I felt very safe, since the front door had a massive 4-step lock and the gate to the garden is lockable too.
Upon check-in everything was squeeky clean. Seriously the cleanest AirBnB I have ever entered. And no dirty unpleasant surprises afterwards either. I loved spending time/working on the mezzanine, where it was very bright and a bit warmer (if the sun would shine on the rooftop/window) but I loved to just chill and working on the beanbags.
As a foodie and digital nomad I am always very critical on WiFi and the kitchen. WiFi was just perfect and strong, glitched only once. And the kitchen has the basics you need to prepare a nice meal. Fridge also has a small freezer compartment which for me is valued as a bulk buyer of meat.
The hosts are basically not around, but very approachable and available through Whatsapp! I have stayed here for 5 weeks and practically started to feel like home to me. If I ever go back to Porto, I would certainly come back here again. Thanks so much Erik and Andre!