agree with tiredemma
If you book with a UK agent or operator you will have more financial cover. If you booked your accommodation for Sardinia through a UK agent you 'should' (check it out before booking with the agent) be covered by UK laws. Travel agents should provide protection for your money, but this doesn't always apply. If you book direct online with an overseas company, that is outside of UK law, check their T&Cs before booking.
ATOL = Provides protection for flight only and holidays with flights. Air Travel Organisers' Licensing (ATOL) is a protection scheme for flights AND air holidays, managed by the Civil Aviation Authority (CAA). Most firms who sell air travel in the UK are required by law to hold a licence called an "ATOL".
NOTE that ATOL cover / protection doesn?t apply if you buy flights directly from an airline.
ABTA = Association of British Travel Agents (ABTA) is a travel trade association that has a bonding requirement for non-air holidays as a condition of membership.
There are lost of other Travel Trade Associations aswel as ABTA. Listed on the CAA website. whats this all about
As www.sardinia.net is not a UK company I doubt they have to abide to UK laws. The contact address is in Italy. I cant find any T&Cs on their website either.
The best way to make sure you have cover is to buy through a UK Operator or Travel Agent and purchse a package holiday. You should get and ATOL Receipt from them as proof of your holiday booking. This is a holiday that consists of two or more elements, e.g. transport and accommodation, that are sold to you as a package at an inclusive price.
Get Holiday Insurance.
Clear as mud isn't it????!!!!