"I have a very mixed opinion of Fins."

I have a very mixed opinion of Fins.
Their swimming instructors are great, friendly and welcoming.
Unfortunately the staff supporting the business are not great, having not kept commitments around how lessons will be consumed.
I was also told I'd get a swimming cap on my first lesson and didn't.
This has lead to me missing out on at least 25% of my lessons which were paid for in advance.

I'd recommend the swim instructors, I just wouldn't recommend you pay Fins as a company.