My organization holds a lot of our events at the Westin, so I've eaten lunch and dinner at the Coldwater Bar & Grill a few times. Lunch is my favorite time to be there. The atmosphere is much more low-key because it is less crowded, at least on the days that I have been there. The prices are also much more reasonable for lunch. As far as prices go, I would call it comparable to any of the other restaurants around for lunch. Dinner is a bit more expensive, but they expand their offerings and offer quite a few fresh fish options. I highly recommend their "rustic hot bread" as a starter. It has loads of roasted veggies, garlic, goat cheese and pesto and warms you right up on a rainy day. I've had the salmon and the halibut and both were very good. Though I haven't tried it myself, my dining companions usually go for the salads or wraps and they all have looked very good. They make their drinks really really strong (I think they want you to get your money's worth, as they are a bit pricey).
The servers are nice, but I did get frustrated with the hostess at one point. The Westin's garage was full so we were 10 minutes late for our reservation. When we got in, the hostess had given away our table and made us wait another 20 minutes, though the restaurant did not look very full. When I asked to speak with a manager, she magically found us a table. They didn't seem to be aware that their garage was full or care that it could cause a delay. But, that was last December, and all the staff I've met since then have been very accommodating.
All in all, it is a pretty good place to go. However, if you are in the neighborhood, savvy diners would probably choose to hit one of the Tom Douglas establishments or the Icon Grill.