Best Senior Living in San Diego County. The award-winning Casa de Mañana Retirement Community, in beautiful La Jolla, California, is the jewel of the Southern California coastline. Enjoy upscale but comfortable independent living and assisted living on the magnificent Pacific Ocean. Named La Jolla’s Best Retirement Community year after year, Casa de Mañana offers oceanfront senior living with many home style accommodations to choose from including two-bedroom villas and oceanview apartments. Unlike other retirement communities that offer similar services, Casa de Mañana requires no large, upfront entrance fees.