We stayed at "Charming Chalet near the beach, Oporto" with our two daughters (ages 4 and 2) from the 11th up and until the 21st of July 2021. We were welcomed by the kind owner Joana who was very helpful and replied promptly to our questions through the airbnb website. The house is very nicely decorated with a homey feeling. There is a little garden were you can eat and enjoy the sun. The beaches are very close by and the major highlight of the trip; we felt like they were hidden gems!
The facilities and amenities present are basically all you need for a holiday with two young children. It is a bit noisy due to the sometimes busy street (weekends) and train, but we did not mind nor hampered by it at all.
We would recommend "Charming Chalet near the beach, Oporto" to everyone wanting to have a non-touristy beach holiday in Portugal.