The location is perfect. You can walk to every attraction of Porto. Checkin was pretty easy, lock pad needs some precision. Studio is clean and feels like a little home.
Only downside was that there was 0 isolation between the appartments. So you will have a hard time sleep if you have active neighbors in the morning or evening.
Be aware that you will only receive towels once and an extra set will be charged. After complaining we got it for free, in my sense this should be provided if you are staying 4 nights.