I love homestays and this was one of the best. I stayed there for almost 3 weeks and made good friends.
The house is close to the beach and is in a quiet street. I slept like a baby. You can hang out with others, cook and talk. There are also two cute dogs which are always a good company. and there are handful of cute bakery and cafes. Try surfing at Matosinhos beach if interested and volleyball on weekends. Porto is 30 minutes away by bike/bus/boltTaxi.
Jose Diogo is a really cool guy and has his own interesting projects. Really cool guy.
I would recommend for a short or long stay.