We spent the 1st 2 weeks in September here with Eurocamp (who we have used many times before and never had any problems with). The weeks were actually the last 2 weeks the site was open and it was gradually closing down, which was a litle disconcerting even if it didn't impact us.
Overall this site is spotlessly clean and the pitches were very private. Pine trees all round the site gave some very welcome shade and added to the beauty. We were off season so the site wasn't full but it still had a lot of people on - still there was plenty of room in the pool and plenty of loungers available.
Top tip would be to hire a bike at around 33 euros for 2 weeks - it makes getting to the beach loads quicker, getting round the site loads quicker and locally it is pretty much flat as a pancake. We had a car too but cos of all the people walking aimlessly around, some pretty daft parking and some dangerous-ish driving of golf buggies by camp staff we found it quicker to cycle around.
The site had wifi for 5 euros for 5 hours use (this 5 hours was a toal that could be used Gradually during the stay. They had other (longer) deals but we found 5 hours ample.
Site Food - contrary to some other reviews and site blurb the takeaway was open to the last day the site was. BUT - it was not exactly haute cuisine. The Pizzas were just about ok but the "rotisserie" chicken was microwaved to reheat. We wouldn't recommend. We admit we didn't try the restaurants at all - simply becasue we didn't fancy them and/or they looked overpriced. May suit families better though.
Offsite food - we had a number of superb meals in the "Hotel Mulinaccio" which is just outside the site entrance. Every dish we had was a delight.Takeaway lasagne was particularly nice. Elsewhere - we rode our bikes into San Vincenzo on a few evenings - some very nice restaurants where you can eat Al-fresco exist at the far end of the town in the pedestrian zone. This is about a 6 mile journey, but there is a bike lane almost all the way (bar a couple of hundred yards). So this is a good option if you have a bike with lights. Its a nice atmosphere when you get there.
Supermarkets - the onsite one was well stocked but very expensive (which is to be expected). The "fresh" bread from it was - well not fresh in our opinion - so I tended to cycle to small bakeries in nearby San Vincenzo or Venturina for breakfast provisions. We hardly used it though as we had a car. Although other reviews suggest the co-op in San Vincenzo, but this was very very busy. We found a slightly closer and bigger co-op in nearby Venturina. However, there is also a new "Conad" supermarket in Venturina, which we preferred to the co-op. Both Supermarkets in Venturina were completely non-touristy (which we like) so if you are after the authentic Italian experience go for it.
Beaches - Baratti was very pretty but as its about 5 miles away needs a car (or a longish bike ride). Be warned on car parking there - about 1.6 Euros an hour. We thought the local beach was very nice - again its about a mile away from the site but lots of parking for bikes (none for cars). Sure it had a steep drop so is a bit iffy for kids but for adults it was lovely. Baratti has a much shallower drop. Further afield the nicest (most prettiest) beach we found was at Punta Ala - it was about 40 minutes away. Parking might be an issue in high season (?) but it was fine for us. Again a very shallow drop so brilliant for kids.
Other places to go - Populonia at sunset - fabulous views and go up the tower there for 2 Euros and an even better view. Castagneto Carducci was a pretty hillside town about 20 minutes drive away. Pisa was about an hours drive away - we could have gone by train from San Vincenzo but they were infrequent coming back - we went at midday and found parking easy - it was a bit touristy but well worth a visit. Further afield we did a day trip driving to San Gimignano (a lovely medieval hillside town) and then Siena (very similar) - we did both towns in a longish day. Very nice.
So overall I would thoroughly recommend the site but recommend a bike and/or car so that you can visit further afield and get more variety of food.