We had a beautiful time in Porto staying in the studio. The location is actually across the river but one view can easily walk over the bridge to the Porto side. Sonia, the daughter helped us get the 24 hour pass for unlimited travel on buses and metro. The whole area is very hilly, so the pass is a good idea. We took the 906 or the 901 bus from in front of Manuela's place and took it for the 10 minute ride to Trindade station at the top of the hills above all the important sights and worked our way down the hills.
The only caution I give is for those arriving by GPS navigation from Lisbon to carefully chart the course on your own. We made a wrong exit off of a round about and allowed Garmin to recalculate. We were directed on a new route that had us go through the oldest part of Vila Nova de Gaia down impossibly narrow twists and turns. A local older man tried to help by first trying to pick up the back end of our 4 door Focus so as to improve our angle for the turn. That didn't work but he directed my repeated efforts get the car around that turn. This has made for a great story, but I wish I had turned around and stuck to the main route which is easy. Sonia was very helpful in arranging the parking of our car and parking is free in the garage.
Sonia and Manuela are wonderful hosts who go out of their way to make sure you are happy and content. I highly recommend. The views from the long promenade along the river in Vila Nova de Gaia are GREAT!