I'm thinking of going on a little trip around some Balkan countries next month. It'll be with my boyfriend, who's Turkish, so we're restricted to visa free places for him (i.e., most of the Balkans). Thinking of flying in to Sarajevo and out of Skopje. Want to go to Mostar and lake Ohrid but don't have many other ideas. Is it going to be roasting hot everywhere? I'd really like to do some proper walking but don't cope well with heat. Any other suggestions? I don't care about beaches but like green, natural places and swimming in fresh water. Is it worth renting a car, and is that feasible - or should we stick to public transport?