Good point, some players can be immature... and while I do agree that the plaza would be a nice place for it, even decent machines get lag there...
Lazy me has not made it into the winch area yet, so I don't know about lag, but what if it were placed there? More of the dedicated players would be able to get into it, hopefully keeping the more immature players out. At the same time, it poses problems for those with, say 3 alts that they RP with as it means all 3 need winch access to get there, if they want them there. Then there's the players that spend all of their time mining so they can do magic training, killing stuff, or RPing (like me

). Then again, more incentive to get into the winch area.
Another option, make it an indoors bath house. Lag should be less of a problem, and it can still be near the plaza. Plus, with doors, an entrance fee might be more easily introduced if desired.
I'm just throwing some ideas out there. It seems the main problems are immature players ruining it for others, and lag, so finding an acceptable solution to both might make it work?
Also, I was thinking like a kind of bath house where there are baths, but there is also a sort of pool too.