We spend 10 days in the estate with two families with kids from 4 to 9 year-old. We absolutely loved the pool area, the grass and the garden is very well kept, and it feels almost like at a spa resort. The estate is huge with so much details it makes the visit very pleasant and interesting. One thing we were a bit afraid was the lack of AC. However the old stone house was not hot at all and we slept well.
We knew nothing about Porto or Sandim as a destination in advance. There is not much in Sandim (although at least one of us spend hours running the narrow and charming little roads in the hilly village). There are small local coffee shops here and there (not even in Google Maps), but no real restaurants or super markets. To go anywhere you need a car. Luckily everything is close by. A surf course in Espinho, date nights in Porto, a day in Medieval Festival in Santa Maria de Feira, cable cart and sights in Porto. And then just enjoying the lovely Casa dos Laceiras.
Our host Ana was clear and helpful with the communication. Even gave us some good local hints what to see.