The studio was perfectly located right around the corner from the main road Rua da Santa Catarina. I took the metro from the airport (30 minutes) and got off at Trindade station and walked to the studio through a residential area with beautiful cobblestone streets. My first ten minutes there were already lovely ... the studio was in perfect condition, looks newly remolded and immaculate. perfect for a couple! I ended up being alone and I'm a female in my 40s and felt very comfortable coming and going on my own. I walked everywhere but the purple line metro is very near by. Andre spent a few minutes with me and mapped out all the main 'to see' spots and I just followed the map (old school) didn't have to pull out my cell phone to find places. The map details that Andre put together was perfect and I was able to see all his recommendations in order of location/distance from the studio and didn't miss anything.
I would highly recommed this studio and Porto! just an amazing city!