Resort Le Dune in Sardinia would be a good choice.
Have a look here:
[url]http://www.totstoo.com/hotel/resort-spa-le-dune/[/url]
Or call Tots Too on 020 7284 3344

We went to the Mark Warner resort in Sardinia last summer and had a fabulous holiday!

Have a look at http://www.familyholidayscompany.com/blogs/sardinia-family-holidays-2015 - these are our top picks for family holidays in Sardinia. Le Dune or Chia Laguna are fantastic for mid-budget. Let me know if you would like a quote.

We have finally booked our holiday and are now looking for some mid range , toddler friendly options for Sardinia , preferably one that includes transfers etc.
Self service or resorts, either work ....