I've noticed a lot of new people running Tomba! and the most frustrating part for me was the haunted mansion routing. So I took the time today to draw (poorly) each of the mansion sides, and label the doors. It has been uploaded to my imgur. So i guess i'll just post the links.

The arrow sections are where you can slide down. Any door with an X on it is not necessary to enter for Any%.

http://imgur.com/CKfs9Hq North Side Mansion

http://imgur.com/zJYjmCV South Side Mansion - Picture got a tad fuzzy on this one.

http://imgur.com/f9vrSuT East Side Mansion

I hope this helps someone, again sorry for my overall lack of dexterity with a pencil!