ATTENTION! Be aware that the apartment is extremly NOISY at nighttime. We could not sleep until 4am.
My boyfriend and I had booked the apartment for a weekend trip the Porto. It says that the bar is near bars and restaurants, but not that is is directly above one and because the sound absorption is so bad, it feels like someone is throwing a party directly next to you. Even it is not that loud inside the restaurant it echoes very strongly so that inside the apartment you can hear people moving their chair and normal chatting sounds like shouting...A few people had already mentioned that it can be a bit noisy, but the answer from Mario was that the problem will be solve. Unless the restaurant does not shut down, that will not happen.
We regretted it a lot to have booked that apartment and I recommend you to read all feedback very carefully. When I read the other feedbacks in retrospect, I realized that many of them had the same problem as us, but had not written it so obviously.
In case you want to visit Porto for partying and will not be home before late at night, the apartment is fine. The bed is comfortable and the kitchen has everything you need. Also I guess it is not as noisy during the week. On Sundays it was already a bit better.