To find a vacation rental in any town I would start with some of the larger vacation rental sites like VRBO.com and work your way through other local sites like the Acorn.com.
But the majority of the sites change their information so often it's hard to keep on top of it. Once you find what you're looking for - even at the end of the year - I would secure the location ASAP. What's available today may not be around tomorrow.
That being said work with a site or vacation company that provides photos of the property you will be renting. If there are no photos you need to step back and be very cautious because descriptions can be vastly different than the actual unit.
Call me if I can be of assistance. Coldwell Banker Westlake Village, 30 year veteran, Licensed Broker.... more
Sometimes it takes a few days for the listings to show up but you should contact the customer service department to inquire if you are still having problems. There are many other sites to list your rental and you might consider talking to property management companies too.