A little different but where is a good public place to have sensitive conversations?

I know this sub mostly focuses on digital tools so I hope this is ok here. Obviously the safest option is completely non-digital. I'm hoping for some recommendations for public spaces (ideally without paying to reserve a space) where one could reasonably expect to have private/sensitive conversations without pryong ears, so to speak. I'm in a cold region so outdoors sadly is not practical.
MODS if this is not allowed here please at least point me to a better sub …

cold conversations digital expect hope mods non privacy private public recommendations space tools