We've stayed at CSR four times, and while we have seen people with nametags and know that there were conventions during some of our stays, we have never found loud or rowdy people. I'm not saying it doesn't happen, but it has not been our experience. We travel with our kids, so we aren't hanging out at the bar late at night anyway.
Pros:
VERY comfortable queen beds - better than Poly, Beach Club, OKW or AKL (about the same as BWV)
Sliding wooden doors between the vanity and the room - allows me to get up, shower, dry my hair and get ready without waking the kids. Also allows for privacy when getting ready in general.
Great pool and slide - my kids like it better than any Disney pool except Beach Club
If you are on the
DDP, the Pepper Market is a great value. Breakfast and lunch are buffets and dinner is a la carte, but they are all quick service credits.
Bus service has been excellent all of our trips.
If there is a convention, you can expect the pools and the buses to be much less crowded than the size of the resort would indicate.
Despite being a convention resort, we have found CSR as family-friendly as any other Disney resort - we always see tons of families and my kids always make friends at the pool.
Pool bar has yummy margaritas and serves food (but closes too early at 6 - so a little "con" there).
Rix nightclub if you are looking for some adult time.
Huge hot tub
Fitness center
Spa and salon
Upgraded toiletries compared to other mods - CSR has separate shampoo and conditioner like the deluxes instead of the combo like the other mods - a small thing, but I still appreciate it.
Cons:
If you are not on the DDP, Pepper Market is expensive for a food court.
Cafe Rix (the grab n go) gets very busy in the morning now that PM is a buffet at breakfast. There are two other counter service restaurants, but they aren't open for breakfast.
There is one convention in late February every year (Grainger) that pretty much takes over the resort. I'd book CSR during a convention any time, but not that one.
Some people find it a "con" that CSR only has one sink. We don't - CSR has great counter space, which is more important to us than an extra sink. There is plenty of room for two people to get ready at the same time and plenty of space to store stuff.
Enjoy making your decision!