I'm booked at INNdulge and looking forward to the event as well.
Note - the Casa Ocotillo, www.casaocotillo.com - This property is now a private home and is no longer being operated as an accommodation.
Otherwise, the list above is a great help in finding accommodations. Also, for those of you who may be flying in, PSP airport may be expensive, you may want to consider ONT, SNA, LAX as alternative gateways. Depending on your day/time of your arrival driving from SNA or LAX may be challenging.
I did find a connecting flight from PHX to PSP that was reasonable and flying into PHX is relatively affordable.