We arrived late at night but that was no problem at all, because of an electronic door locker. We came from the airport by metro and it's very easy to find! no changes (30min) and very close to the metro exit. It is a very nice flat with 5 rooms and kitchen and two bathrooms and terrace and and and ;)
as breakfast you'll get a voucher for a nearby cafe wich is also very nice! coffee, tea, lemonade... it not very much (sorry but you have to know I could always eat ;) ) but you are no longer hungry and can start your walking trip around Porto right after finishing your food.

As we checked out I talked like 10 minutes with Mario on the phone and he even gave us some tips for our route to Lisboa and he was very kind!

Sadly we stayed just one night and if there is any chance we visit Porto again, it would be in his Apartment! :)