The Village Hotel
Most of The Village Hotel gyms that I have been to around the Midlands all have open showers with no dividers.
They also have stalls which the fast majority use, but during busy times there are often guys that use the open showers so they don't have to wait.
My favourite observation is spotting the new guy that has never used an open shower before. Watching the hesitation and the mild panic before just stripping off and braving it.
I have seen many erections, full and semi, and even guys that just take care of them there and then. Not all were necessary gay/bi, just horny.
I agree with you. Getting aroused when in a naked communal shower is not necessarily a gay/bi thing..... It's just a male thing. I think that is why some guys hesitate, as they know they'll want to look at other nude men and they also know they will get excited! It doesn't make them any less or more of whatever sexuality they are!!
I need to try a Village hotel once things get back to normal. Communal showers are always great - As you say its a great male thing just to get hard. All us guys get horny. Nothing better than sorting it out. What times are best to see erections?