La Fortuna - best hot springs day pass?

Hi - I will be in La Fortuna for a few days at the end of this month. I've already booked a sloth tour, chocolate tour, and safari float tour. Because of a bum ankle, a volcano hike or waterfall stairs are out.

So I was thinking about getting a day pass to one of the springs. Paradise looks like a better price than Baldi - is it good? And would I encounter any weirdness as a single female (40s) at these resorts?

Thanks!