How to resolve the feng shui of the host’s house when a couple are guests and share the same bed?

If an average couple goes to someone else's house and is taboo about such things, they will put some money under the mattress when leaving the host's house. This is usually fine.

You can pay as much or as little as you want, as long as the owner understands the meaning. You can choose to tell the owner or not. This is called losing money and avoiding disaster.

This is how I handle it. I don’t know what other places are like.

Thank you.