We found this place incredible to go with kids. Huge park for them to play, lots of activities during summer time (we missed them), swimming pool, soccer and volley court, lots of trees, birds, and the feeling that your kids are not disturbing anybody. There are around 10 cabins, each of them with its own barbacue, small terrace, and trees which offer you some privacy. When kids are tired after a whole day activity and you don't want to cook or go to a restaurant you can order food to your cabin. This was a great solution for us because restaurants in Villa General Belgrano open quite late (around 9 PM). Regarding breakfast, I would suggest you take the Am Bach proposal, at your cabin's door you will receive a tray with a bottle of coffee, a bottle of milk and a great variety of pastry and bread and you take it whenever you want.
The owners are very nice people, very helpfull and can guide you on your visit and activities around the area.
Do not expect luxury, but expect a neat, clean and cute cabin with German/Tyrol wood style flavour.
A big disadvantage is that for the time being you need to pay cash or transfer which makes the reservation process difficult during high season. Hopefully this will change!