Excellent review that I almost completely agree with. I'm not as enthusiastic about the snack offerings in the lounge. You certainly can make a light dinner out of what they offer there, as long as your expectations for the quality of the food are fairly low. On the other hand, the staff there are excellent, the complimentary wine, beer and alcohol are a nice feature, and it offers a good view (to the extent that a view over Dhaka is good).

I'd add that the ground floor (one floor below the reception floor, which you access via an escalator) has a pleasant cafe with very reasonably priced (by Westin standards) and fairly tasty sandwiches and other light meals.