I'm female, and it was okay. The shower room I used had a rickety latch. The barber was out when we arrived. A waiting customer pointed us to the back, so my friend and I each jumped into a shower stall. The one my male friend was in had a door to the back of the building. When the barber came in, he entered by the back door which wasn't latched since my friend wasn't expecting anyone to come in that way. I would have been embarrassed if I'd been in that shower, but I bet the barber would have been more embarrassed!
My guess is that an RV park would have cleaner, more spacious, more modern facilities, but I liked the atmosphere of the place. The customers were teasing me about needing a haircut when I came out. The barber admonished them not to insult his customers and urged us to ignore the riff-raff. It was like jumping back in time, or into Mayberry, and I got a kick out of it.