Paulo is an excellent host; the apartment was exactly as expected with an amazing view of Lisbon's beautiful rooftops and the river. The location inside the walls of St. Jorge Castle is very unique and makes you feel like you're a local living in a small village community. As a solo female traveler, I felt perfectly safe, however, I would suggest making sure you know which route to take to get back to the apartment in the dark. If you don't walk, you can hail a taxi on the street, no problem. I highly recommend Paulo's apartment in Lisbon.