Really one of the best places I've stayed in using Airbnb. Rosa and Abilo are amazing hosts and were incredibly warm and generous to us. In addition, they responded quickly to all of our questions and even helped carry our suitcases! We were really lucky to meet them in Porto. The place itself was spotless, close to metro public transit, and very spacious. It's great because it's on the yellow line, which is I think the best line to live close to given how frequently the trains come and how easy it is to get downtown without having to live in the middle of downtown.