This is a wonderful place to stay. It's a perfect location to get away and relax. Getting the bus into central Sintra and then to the main attractions is easy and convenient. You might have to get an Uber back if you're out after 7pm, but that just cost €7-8 from Portela de Sintra.
I adored my stay and enjoyed the swimming pool, the nature, the amazing local shop with lots of organic products and excellent baked goods, my cute little tent and good conversations with our host, Carlos.
I highly recommend this camping site and would absolutely stay here again.