My friends and I stayed at Manuela and Pedro's place for two nights. Check in was easy, the place was very clean and comfortable, and we loved being close to sightseeing and great restaurants. We didn't read the reviews about the people behind the building and drug activity. We noticed it but it wasn't a big problem for us. Like any city, you have to be careful of your surroundings in Porto. We never felt unsafe in the apartment or area. I definitely recommend this place for a small group of friends or a small family to enjoy the city!