What an awesome location, GREAT wifi & comfy bed while being very clean AND having an elevator! After all the hills you climb in Porto the last thing you will want to do is climb 3 flights of stairs! Bonus is the washer machine. If I booked further than a day ahead of time, I would have loved to pack less!
Now this is by no.means is this a big deal but when staying longer than a couple days which we did (4 nights) we would have found a suitcase rack or a low dresser of sorts to put luggage on very useful. On a different note, a small trash bin in the bedroom would be handy & a top sheet for the bed for when the duvet is too heavy for warmer nights.
Please ask the neighborhood seagulls to keep it down at night. Just joking!!