I totally agree with the review, Mission Inn is a wonderfull place to stay and play golf.
The course I have enjoyed the most is El Campeon, the original course built back in the 1920s. It is kept in wonderfull shape and the elevation changes makes it more challenging to play.
They have many weddings in Mission Inn because it is so picturesque. If you plan to stay and play golf you will find it a great experience, they also offer a fantastic breakfast as well.