Hello Ismael,
If you have the funds, buy now, in BA as well SR generally, prices are going up rapidly (JMHO). I can give you the name of a good agency; I bought a flat in Kremnica through them and all went well.

If you have a second or 2 please see my post re: 'US National... possible to live and work in Slovak Rep?'

Maybe you have something to add?

Kind regards,