Wonderful place to feel the beautiful view of the river!
The place is bit hard to find(but don't worry: Juão has written complete guide to enter this place), but it means it's quiet and private. I barely heard any noise from the neighbours.
The decoration inside is very artistic. It fits perfectly with the outside. I recommend you to just relax and watch the beautiful sunset from the window.
João is super friendly and will give hand when you need help. I strongly recommend you to listen his guide during check-in, especially about the usage of each key.
I wish my stay was longer. Next time I visit, I'd stay at least a week. Porto is calm and peaceful city, and this place is perfect for people who love to relax and enjoy the scenery.
And for people with big-size luggages: be aware of stairs!