My stay in Porto at Angela's place was amazing. It is located in a great (safe, nice, convenient) area of town, where anything and everything is walkable :). There is a great cafe right next door called Cafetaria Viriato that I definitely recommend. Tons of amazing/hip cafes and restaurants around the corner, not to mention the clothing shops (vintage and portugal-made). I stayed here for 2 months and didn't have issues with wifi at all, and was on a lot of video calls. Angela was great about any linens/towels and I always had new ones whenever I needed them. The bed was super comfortable and so was the pullout couch.