While this place was really lovely, we found it very expensive. It cost €10 per adult + €5 per child just to visit the gardens. (Extra to do a guided tour of the house.)
This was in addition to the €7 pp to get to the villa via water taxi. You can walk it which I am told is lovely, but it was too hot to do this when we visited.
The gardens were pretty impressive and you will love them if you are a Star Wars fan. (It was where Anakin Skywalker and Padmé Amidala were married in Episode 2 - Attack of the Clones).
Despite the beautiful gardens (which didn't really take long to wander through), I thought the whole experience was a little underwhelming.