I am in Ljubljana now and it is a very delightful town, the markets are great, the castle walk up is extremely steep and the path is not very pleasant under foot in my opinion, but there is the funicular ride. Depending upon when you are there there is a Sunday flea market on the Cobblers Bridge. The city was very crowded.
I went to Lake Bled today by public bus ehich is very easy and frequent and in the five euro category one way. Delightful day the walk up to the castle is on very well defined and maintained paths and all though steep was fairly easy. Stop at the church is you enter the town, their price for the lake lead cake was extremely reasonable and the interior of the church was lovely. I was disappointed in leaving Blood Center to walk around the lake that starting on the castle side the lake is hidden. So if you're going to walk any distance around the lake I would start on the side opposite the castle.