Khandro, I have no idea from where you have sought legal advice, but it sounds as if you've come across some charlatans.
Since 2015, it has become v easy for those who own property in Europe to make a Will which deals with all property with a (say) UK Will. It is not complicated or difficult. Unless your affairs are v complicated or some tax planning is needed, there is no reason why a local solicitor cannot draw up your Will for a few hundred quid.
Seek the advice of a specialist, ideally a STEP member (Society of Trust and Estate Practitioners).
Don't do it yourself. It's v easy to cock it up and it then costs your beneficiaries money to sort it out.