I haven't stayed there but visited colleagues who were staying there. It seemed alright, a good hotel. Personally I think there are better options in KL to choose from.
Although it is the the central city it is a bit out of the way. Nothing much within reasonable walking distance. Only really Zouk nightclub and Saloma theatre. You could walk to KLCC but in the heat and humidity I wouldn't recommend it. Although it is close to the Bukit Nanas monorail station which can come in handy.