Awesome location, great and kind communication with the owner. Low price, so of course you need to take that in consideration. The appartement is small, which is not that much of a problem if you are staying for few days but more days could be a problem. What you also need to consider is the amount of hunidity. If you have a problem with humid places it is not for you (allergies for mold!) But if you look for apparment for a few days in the heart of Porto and you just want to sleep there and thats that I recommend it.