It was a complex in Germany where nudity is standard. It's unisex so man and woman all walk around naked (small minority with a towel). Here in Germany we really don't care about nudity and think it's normal to walk around naked in a spa. It's sometimes funny as you may spot a boner now and then but nobody cares.
The ones that looked just looked when walking by but didn't say anything about it. It's a nice feeling to casually walk around naked in the complex while having a pee.