We stayed one of Villa Undulna's 2 bedroom apartments. It was fitted out well and was comfortable.
AS per the other review, there is not a great deal going on in the local village so we went to Forte dei Marmi most evenings.
Teh hotel is 50m from the beach, you have to pay for them even though the Hotel has some permanent spaces on one of the beaches; 45 euro per day for 2 deck chairs, lounger and umbrella. I personally thought this was expensive. Further south we found a Municple beach which was 20 euros per day for the same equipment. On my last day I found another for 10euro about 1 km north of the the villa. The public beach was very small, crouded and not as clean as the private beaches.
The Villa was nice and quite a retreat; we had a hire car which felt like the cheapest in the car park. Whilst the grounds were relaxing we could not completly as we had our children with us; it felt more of an adults environment.
In terms of the cost, I was suprised that only the pool was included and even things like the steam rooms were charged for.
I did not sample their food (as an apartment resident breakfast was not even included) so unable to comment.