Hi - just got back from a week in Hvar and would like to advise the ladies not to bother to take any high heels or unstable shoes! The streets are paved in beautiful old cobbles and stones but are very uneven and extremely slippery when wet! Just bring some comfortable flip flops, maybe sparkly for the evening and some walking sandals if you venture out of town and do some of the great walking that there is around. Hvar town is also steep and hilly so be prepared for that too. Otherwise just go and have a fantastic holiday as we did. Hope this helps future holiday makers!
PS Great shoe shops in Split if you want to buy any to take home