Is it easy to get a public bus to Lake bled from the hotel?
You can reserve a private transfer, asking to the concierge. Nearby there is the bus stop where you can take only local bus. There are buses that carry you in Bled, but it is not easy.
If you are travelling by car, I suggest to use it to carry to Bled, it is easier!
I believe that there are hourly buses from Ljubljana to Bled but I'm not sure if you'd need to go via the centre of town/bus station to catch it
Get an answer from M Hotel staff and past guests.