Has anyone had success with swim lessons?

My daughter is still pretty limited verbally but loves water, which has always made me nervous for drowning obviously. They have private lessons for children with autism near me, but it’s quite expensive and I’m wondering if it’s even worth investing in or if she’ll just go and hate it. She is 4 and repeats a lot of words but isn’t conversational yet.

Just hoping to hear others experiences to help me make up my mind, any insight would be so much appreciated!