There are no safe spaces when you are living reality.
And that's the way it is.

There are nice people and wankers, and the gender, age or country doesn't make any difference.

I have never done couch surfing, but seem like a cheap way to stay places.

I would out to a girl for free nights accommodation, no problems what so ever! lol'
(With my history, it would be hypocritical for me not say anything else).