I'm not sure what you advice you are really expecting here Ethros, besides "find somewhere else to do it".
Do you think people will tell you about some amazing place which is comfy, warm, spacious, private, free and within distance of you?
Churches. At night.
It is spring and it is currently 5 (c)/48 (f).
That's the sort of temperature they report on the news here as record winter lows.