Hi,
My name is Zdeslav Akrap and I live in Split. I have a lot of connections in Istra, especially in Opatija, Pula, Porec, Rovinj, Umag and Buzet. Maybe that can be helpful for Your 'problem'.
As I am serious professional (working in one of the biggest European bank), I think I have necessary verbal skills to get this problem solved.
If You think that it might be helpful we can set up a skype meeting.
I'm just curious how far did You get so far on this project, where is the house located and did You had any major obstacles regarding Croatian law.
Best regards,
Zdeslav Akrap