This place is the highest so far on my recommendation list, and I will be coming back here for sure next time I visit Porto! The place is amazing, and is super well located on one of the highlights in Porto. It has a very cosy feeling, is nicely laid out, has a GREAT view over the city, and (conveniently for some) is not too many flights up the stairs ;-). It's close to literally everything, and walking distance of max 10 minutes to any highlight or need (bar, supermarket, etc.). Hence my high recommendation. Go here, you'll not regret.