My girlfriend and I stayed in the P309 main room for 4 nights. We had an amazing time and would definitely recommend couples wanting to explore Porto to stay here as well for three main reasons: the apartment, location, and hostess.
The apartment is beautiful. It is an old building with high ceilings, large windows, and a nice an peaceful garden. The room we stayed had its own bathroom and a comfortable bed. Everything from the shared kitchen to the room we stayed in was nice and clean.
The location of the apartment is around 10 min walk from the old center of Porto and has a metro stop right around the corner. This was perfect for us as we could escape the busy city of Porto whenever we felt like it but would be back very quickly as well. The apartment is two doors away from a very nice cafe were we had breakfast to start a day of exploring.
Finally our host Sandra really made us feel like home. She welcomed us with a glass of white Porto wine and told us about the city. She really knows a lot about Porto and the surrounding city's and pointed us towards the must visit places. Ideal if you are staying for a short time.
In conclusion, great place and definitely would recommend to others.