Helena was a great host, very welcoming, helpful, and provided lots of tips and insights into Porto. Her place is about 20 - 35 minutes from downtown Porto, with multiple bus options. The room and home were clean, and the bed comfortable. I had to repeatedly log in to her Internet provider for the WiFi, but it worked and I was able to get the information I needed, mainly about sites to visit and travel plans. If you're planning to spend a lot of time on WiFi it might be more of a nuisance. Her partner, Fernando, was there, and was also a very interesting and warm person. If you are sensitive to cigarette smoke, you might want to ask if he'll be there as he smokes quite a bit. I mainly noticed because I joined the two of them at a couple of bars for a few drinks and conversation until late at night, so your experience might be different. The home did not smell of cigarette smoke. The neighbourhood was quiet, so it was easy to get a good night's sleep. It is also close to areas north of Porto worth visiting. I would recommend staying at Helena's home and would certainly stay there again.