The main tag to use is building=cabin. I think it's reasonable to include building:use=hotel in addition though.

Two other suggestions I'd make:
1) Square the shape of the cabins as you're drawing them. On most editors that's done by hitting Q. On Vespucci, "To square a polygon, select it then choose “square way” under the “More options” icon."
2) It looks like the Lake Trail is mapped in a way that doesn't match the imagery. If you're on site, can you see where it actually goes and update it accordingly?