Set in Slovakia actually, but was filmed over the border in Czech Republic.
We went 1st April last year & wore shorts & T-shirt’s every day :D
100% recommended. If you're on the line about going...just go. It's a breathtaking place.
Lakes are great. Bottom waterfalls are busy, because all buses go there with tourists. Realyl worth to start at the top waterfalls and walk/ferry down to the bottom. Nice 5h+ trip, so make shure weather will stay dry.
Amazing coastline. Just be aware that travelling from Split to Dubrovnik, you need to pass through a short section of Bosnia. So check the car hire for foreign surchages and breakdown coverage. If you do go to Split & Dubrovnic check the ship arrival schedules to avoid being swamped by cruising zombies. Personally I'd skip them anyway