Airbnb. But my favorite is when someone artistic decides to leave us a drawing!
The first one is from 2008, but the others are recent. Gail Siptak, the first artist, is a talent extraordinaire in Houston, TX. If you'd like to see more of her work, visit her site at gailsiptak.com.
For rates and availability, Shantybellum Guesthouse is listed on Air B&B, Expedia and Travelocity and other related travel sites.