Thanks for sharing experience outside Rio and SP!
I also visited Sao Luis in August for my first time. Although my real destination is lençóis maranhenses, I stopped over the city for 3 days. Lençóis maranhenses is so beautiful by the way, well worth my flight tickets.
In the sauna, most guys ask for 200R though, apparently I was quoted the gringo price because I am an obvious gringo ...
I did not think much at that time because I went there from Rio where 200R is pretty normal. Now I figured out after checking other folks report. I will be better prepared next time.
Other than that, I quite enjoy my Sao Luis trip.
The old city is beautiful and it only takes 3 hours to visit all the main tourist attractions. Only if there is more maintenance to it. The poverty and lack of maintenance is hard to ignore while visiting the old city.
The boys are humble next door boys type. Compared to Rio, they are like 202 guys. There is no big muscles guys like 117 if that is your thing. They are pretty laid back and easy going.
During my visit, Thursday > Wed > Friday in terms of how busy the sauna is