The stay at Isabel's apartment was just excellent. The place is very clean, has everything you'd need as a guest and the location is just great. You can easily reach places like the cathedral or Douro River by foot. Isabel is also a very friendly host. Check-in was uncomplicated and she gave us valuable tips not just for Porto but also for other places in Portugal. I would always recommend her as a host and her apartment for anyone who is going to Porto.