Just one thing, in UK insurance companies normally allow us to, if possible use any approved windscreen repair company to effect a repair by drying/cleaning the damaged area, vac'ng it and backfilling with a correct epoxy filler. Now that relies on the damage being repairable and returning the windscreen to nearly as good as it was prior to this damage, there might be a restriction on the areas of the windscreen that can be repaired and obviously limited by the size of the "hole". So some insurers in UK will either repair this free of charge or just charge a nominal amount of money for their approved repairer to complete this repair - and this will not affect any "no claims discount" so it will not be seen as a claim, although who is to say that the next year's renewal premium is not slightly bigger due to this incident.
Is the same thing for you in Portugal? I think getting a windscreen repair place to carry out this work would be wiser than buying a DIY kit if they are available for you.
Last year I had to have a repair on the late 2009
Ibiza repeated due to another stone hitting the same point in the windscreen!! I tried to get the original repair company to repair it for me without needing to pay for it as these repairs are meant to last for the life of that car - but that repairer was no longer the official repairer for this insurer (same insurer as when that repair was done originally), but, that repairer had changed their name slightly, so did not recognise any of the work carried out while they used another company name - that is not right!!