Location of the flat was perfect: just in the city center, 15-10 minutes walk to the river and if lazy - 3-4 euro for Uber. :)
The flat was for its price - basic equipment and products you need on vacation.
The only thing was with the bar which is just below the apartment and makes it difficult to sleep, but if you are able to sleep with the music or you are in Porto to have fun and to party - it's a perfect place.
The most important however was hospitality. We came very late what wasn't a problem for Carlos. What is more, we were also allowed to stay longer in the flat due to the late flight - what in fact was life saving.