We also just got back from our first trip to CSR. We, too, were in Casitas 5 and had a view of a fountain and the lake. I had bad luck timing my trips to El Centro (the main building) with the hotel shuttle. I only caught a ride on the shuttle once in my 6 or 8 trips to El Centro. Bus stop 2 was much closer to our room than the bus stop at any of the other Disney resorts we've stayed at previously (WL, ASMo, ASMu, Pop). As a bonus, the CSR bus stop at MK is the closest to the park entrance.
We liked the food at the Pepper Market, but thought breakfast was a little pricey ($8.25 for eggs, hash browns, bacon, sausage and either a muffin or biscuit). Granted there was probably enough food for 2 people to share.
We had our 2 boys with us (ages 7 & 3) and spent part of 2 days at the Dig Site. The pool was huge and was not crowded either time we visited.
All in all, we loved CSR and would definitely stay there again!