I took a bus trip to Lake Bled from Ljubljana on a Friday morning recently. The bus station is just outside the train station. I purchased a round trip ticket from the office, it was about 11 Euros. Buses are lined up outside the station and have numbered banners above along with their destinations, so easy to get on the right bus. Check the departure and arrival times. Some buses are more direct than others. The bus to Bled made numerous stops in LJ and other cities/towns along the way. It took about 90 minutes. The return only took about an hour with far fewer stops. Now, about the lake..
You get off at the terminal a short walk above the lake. First glimpse of the lake reveals a gorgeous blue luster. You can go left to the hotels at the end of the lake or to the right where there is a cafe a couple hundred yards up the path. The path goes all the way around the lake and can be done in 90 minutes non-stop. On the way to the right, you can hike up to Bled Castle, perched atop a very sheer cliff. The hike up is energetic and the last half is all stairs cut into the woods. For someone in only marginal shape, it wasn't bad, but take breaks as needed. Once you get to the top, you still have some steep climbs to get to the castle entrance.
The entry fee was about 12 Euros and I think gave access to all the museums inside. I just wanted the view and to walk around. There is a little cafe in the courtyard that serves snack, drinks and the famous Bled Cream Cake. I had to try it and it was wonderful. Light and not too sweet with a pastry crust similar to a cream puff. Great view overlooking the lake.
After hiking back down (much easier), I walked to the left around the lake up to the point where I could get a good view of the church on the island. It's spectacular setting. The whole lake with its bright blue water surrounded by mountains was amazing.
On the return, I walked back up to the small bus terminal and boarded the first bus back to Ljubljana. In spite of my ticket indicating only certain times were available for the return, there was no question. Also, plenty of people paid for their tickets as they boarded the bus. The trip back to LJ was much faster and I arrived in time for a late lunch.
It was one of the major highlights of my trip to Slovenia. Next time, I'd like to explore the caves and other castles.