I've stayed in plenty of Airbnbs and this has been by far the best one! It was perfectly clean, had an excellent, excellent location, and for a longer stay like the one I took, it covered a lot of apparently tiny but important details: comfy towels, great bed and pillows, everything you might need for the kitchen, washing machine...
The apartment is also the perfect size for two people (not too small), and Joanna's responsiveness and help was amazing. I highly, highly recommend this place and will definitely book it again when I come back to Porto.