The position of the flat is good and well connected with the city center and Gaia. This a pro if you want to have a fun in Porto for few days.
However, before booking this flat you should know that: (1) you have to take the keys in a location that is 15 minutes walk on a hill (late night check in costs 30 euros) (2) the bed is actually is a sofabed that sucks, so sleeping is extremely unconfortable.