Retreat Center in USA

In September I plan to spend the holiday in a retreat center.
Reading the comments on the forums I decided to go to Old Mission San Luis Rey Retreat Center.
if someone went to this center and whether you have recommendations for other ?

AldoMoore wrote:

In September I plan to spend the holiday in a retreat center.
Reading the comments on the forums I decided to go to Old Mission San Luis Rey Retreat Center.
if someone went to this center and whether you have recommendations for other ?


Which September?  Which holiday?