Westercon 75, scheduled for June 30-July 3, 2023 at the Anaheim Clarion Hotel and Resort in Anaheim, California, has posted hotel booking information on their website. Hotel rates are $169/night (single/double/triple/quad) plus room tax of approximately 18%. Parking (outdoor lot, open 24 hours) is $20/day and is not included in the hotel room rate.
According to Westercon 75, you must call the hotel directly at (714) 750-3131 and mention Westercon 75 when making your reservation or use this direct hotel link to book your reservation. This rate is not available through the main Choice Hotels reservation number or central Choice Hotels booking site, but only through this direct link.