I just wanted to thank everyone for all the great information about CSR on this thread! I really enjoyed reading everyone's updates; it helped me get really excited for our trip!
We stayed at CSR January 6-13, over marathon weekend. I reserved a king bed room, and requested Casitas 4 or 5. We ended up being in Casitas 4, in room 4321 (I love the number! So easy to remember!) that over looked the quiet pool in the courtyard. Such a beautiful room location! We were also less than 1 minute from bus stop #2. I couldn't have chosen a better room location if I tried!
The resort was very beautiful, even though it was really too cold to enjoy the outdoor areas. I walked around the lake a few times, and really enjoyed the walk. The pool closure did not affect our trip at all, because of the frigid weather! It did hurt me walking past the quiet pool several times a day, and never venturing in, though! I used Cafe Rix several times for snacks and to fill my refillable mug. We never used Pepper Market. We did order room service on our second last day - I came down with the dreaded Mickey Pox norovirus and spent the entire day sick in the room. I ordered beef and barley soup and my DH ordered a pizza. They were both very good and the soup, though $7 (plus tax and gratuities and delivery charges), was a very large portion with lots of crackers.
The bus service was excellent, or else we just had really great luck. Even after the half marathon, when there were hundreds of people waiting for buses to the All Stars, I just hopped on to a CSR bus and we were off in minutes.
My one really big complaint with CSR was that the service was the worst that I've encountered at WDW ever. Several times, at both the gift shop and at Cafe Rix, I was completely ignored for 5-10 minutes by CM's who were "busy with other tasks" but who were the only ones on duty to serve guests. It would have been alright if they had said something to the effect of, "i'm busy with this right now, but someone will help you in a minute" but instead I was just left to stand there while they ignored me. Multiple times. At multiple locations. I never managed to order hot food at Cafe Rix, because I was ignored by the CM preparing food and taking orders while the restaurant was otherwise empty. All week, the CM's just seemed overworked and unhappy. We heard many resort CM's complaining when it was busy, with guests standing right there. I understand that we all have bad days, but I worked at McDonalds for 7 years during high school and college, and if I had behaved that way in front of customers, I would have been fired. And McDonalds is not really known for its high standards.
The housekeeping was also particularly bad during the week that we were there. We stayed for 7 nights and our room was only cleaned twice. And one of those times, we had to specifically ask the housekeeper to clean the room and she gave DH attitude. The housekeeping also seemed very busy and overworked. I'm not talking about towel animals or anything special like that, but just emptying the trash and bringing us toilet paper would have been appreciated.
I know the resorts are filled during marathon weekend, so I don't know if this was the case all over WDW. However, I visited WL during the same week last year and experienced nothing but excellent service.
And my last complaint on an otherwise fantastic trip: the dreaded conventioneers. I have worked in a convention center and so thought I would be immune, and that was mostly the case, but there was one group of conventioneers that completely ruined the resort for us during the days they were there. They were an auto parts convention, and mostly young and male, and to describe their behavior honestly.... I did not feel comfortable walking from El Centro to my room without DH at night, when they were around. I was on a bus from Epcot by myself on the night that the group went to Epcot as their activity, and one of the men had obviously had too much to drink and was getting way too friendly with me.

I know that this is not CSR's fault, but this convention did not make the resort a comfortable place to be. For this reason and this reason alone, I will not stay at CSR again. I know big group events like this happen at all the resorts, but it just left a bad taste in my mouth.
Anyway, minor complaints on an otherwise fantastic trip. I will not stay at CSR again in the future, but then again, I haven't yet stayed at the same resort twice. The resort is beautiful and we loved the renovated rooms, but a lot of minor annoyances just added up to no desire to go back again. We're going to try SSR (sharing a 2-bedroom villa with my parents for my baby's first trip!) next year for marathon weekend, and are looking forward to another great trip!