Adam and Ruben are definitely the greatest Airbnb host ever. They both responded so quickly (prior to my arrival and after my departure) and politely on all my questions (even ones that were silly) and very sweet and genuinely kind. I really felt like home and treated not only as a guest, but also as a friend.
The apartment is within walking distance to almost every where (I did not use any local transport in Porto at all). It has everything you need - a cozy room with balcony, a super clean bathroom and fridge in the kitchen should you need to store something. The room is not quite sound proofed, noice can easily hear from the street in front of the room (but not too annoying as I managed to have a very good sleep). Water from the shower was a little bit weak but still manageable. Other than those items, everything was perfect. I completely recommend Adam/Ruben as your host should you need a place to stay in Porto.
Hope to see you again one day Adam and Ruben. Wish you both all the best.