Question Logar Valley, Lake Bled, or Bohinj: Which to Choose?

Before a Zagreb conference in mid-September 2025, I am considering a 5-day excursion to Slovenia. I'm torn between visiting Logar Valley, Lake Bled, or Bohinj. Each seems to offer stunning natural beauty, but I'm curious about the unique experiences each location provides. For those who've been, which would you recommend for a mix of relaxation, scenic hikes, and maybe a bit of local culture? Also, how accessible are these spots in September?