I would like to provide a humid hide in the future.

Is sphagnum moss the preferred bedding in the humid hide?
Where in the enclosure should the humid hide be located? (hot side/cold side?)
How often do you replace the moist medium in the hide?
Is a humid hide an acceptable substitute for good humidity levels in the enclosure? (don't hate me! I haven't done anything yet - my current levels are perfect!)

any other advice about humid hides appreciated.