FYILjubljana is definitely worth a stay, camping by the ring road and easy bus in. The city is beautiful and has a vibrant university population too. English spoken everywhere
Another favourite in Croatia is Rovinj and we second Split as great too
Last year several people warned us off Ljubljana for 2023 and 2024 and maybe 25 as well.
Due to an earthquake and a lot of EU funding coming in, most of the major attractions are covered in scaffolding and closed or partially closed.
We have put the city on out 'to do' list for the year after.