We stayed at CSR and ate Maya Grill one morning. Personally, I was disappointed. The food tasted as if he had sat out for a while. For me it wasn't worth it, and we much preferred to grab our own breakfast every morning from the stations at the Pepper Market
Obviously the atmosphere in Maya Grill is different. Its more relaxed and the restaurant is nicer, so dont let this discourage you, I may have caught it on a bad morning...