We stayed just over a week with our two kids (ages 5 and 2 yrs) and loved it! The farmhouse has been beautiful restored and our apartment (Il Ciliegio) was bright, fresh, clean and just perfect for our family. Emanuela and family are so friendly and considerate - they offered a crib, bed rail and even had toys there waiting for our kids! They live upstairs in the main part of the house and are available if you need them and happily answered all our questions about the area. The other guesthouse is separate from the main house so we never even saw the people staying there. The farm is a very short drive from Radicondoli, however day outings will take usually 45 min to 1 hour drive (i.e. Siena - 1 hour, beaches - 1+ hour, Volterra - nearly 1 hour, Florence - 1.5 hours, Pomarance - 40 mins (great playground for kids here!), etc).
Other positives include: STUNNING views, gorgeous pool (though too cold for us to use in May...), great shower, wifi, ping pong table, homemade olive oil for sale, near sheep dairy farm (with fresh cheese/yogurt for sale), pond with fish/frogs/turtle, free laundry machine
We would definitely stay at Podere Il Giglio again and recommend it, especially those wanting to relax and let their kids just run around!