He was speaking at a joint press conference after meeting Croatian PM Ivo Sanader. Ansip said both Estonia and the entire EU would like to see Croatia join NATO and the EU and for Croatia to be a model of reforms and of a strong and good economy.
Ansip said implementing reforms and changing society had been a good incentive for Estonia in adapting to the EU and was hopeful it would be the same for Croatia.
Sanader, the first Croatian PM to officially visit Estonia, thanked Ansip for his country's support for Croatia's Euro-Atlantic integration.
The Croat said he and his host had also discussed Europe's future, adding they were agreed in wanting a Europe of security, peace and prosperity for all its citizens.
Sanader invited Ansip to visit Croatia and the Estonian PM accepted.
Asked by an Estonian reporter about Croatia's position on the status of Kosovo, Sanader said Croatia was an EU membership candidate whose position would be within the framework of the EU's common foreign and security policy. He added Croatia was interested in a peaceful settlement of the Kosovo issue.
Regarding the issue of Croatian war crimes fugitive Ante Gotovina, Sanader said Croatia fully cooperated with the UN war crimes tribunal in The Hague and would continue to cooperate until the Gotovina issue was settled "even with greater responsibility, given that it has started negotiations with the EU".
Asked when he thought Croatia might join the EU, Sanader said he expected Croatian citizens to be able to vote in June 2009 elections for the European Parliament.
Sanader also had the chance to see Estonia's electronic government.
Earlier today he met President Arnold Rueuetel and Parliament Speaker Ene Ergma.
He is expected to return to Zagreb in the afternoon.