We do offer 3 different booking policies:
The dates are fixed and cannot be changed.
We do recommend to cover your travelling risks with a travel insurance.
This rate is discounted compared to the base rate by about 25%.
This is the base rate.
With the covid protection, you could change your dates once if there will be any travelling ban which, effecting also the vaccinated people, will preventing you to travel.
It doesn't cover for your personal situation regarding the vaccination or illness but only with regards to travelling bans imposed by the public authorities
With the flexible dates, you could change your dates once for any reason and at any time.
This rate might be more expensive, compared to the Covid protection (base rate) by about 30%.