Lake Bled is a great option for travelers who want nicely developed infrastructure, restaurant choices, and shopping places. It’s much busier and more dynamic than Lake Bohinj, and there are also many churches and castles for those interested in visiting them.
On the other hand, Lake Bohinj isn’t as crowded or as dynamic as Bled, which makes it perfect for travelers who want peace and tranquility
There are magnificent views of the Julian Alps and the Triglav National Park, and you can always find a free spot to rest, even in peak times. All in all, both are absolutely worth visiting if you can fit them into your Slovenia itinerary.