Very well situated and design-wise perfect apartment.
Only thing that, in my opinion, needs a little improvement is the check in process.
Prior to your arrival you get to choose where in Porto you want to pick up your apartment keys. You then have to come for the keys and only then you go to the apartment - in my case 20 minutes walk.
For some it might not be an issue at all, but I find it a little confusing.
The keys are located in a lockbox which is on a random building somewhere in the city. Why the lockbox isn’t simply on the apartment building?
Ps: you can choose to have key delivered to your apartment, but it costs additional 10€.