Recently stayed in this hotel. Booked deluxe twin and was upgraded to executive twin as a Diamond member. Le Meridien KL where we stayed the night before upgraded me to their Le Meridien Suite as a Platinum Elite so I'd say Marriott treats their elites better (or maybe it was a coincidence). The evening cocktails at the Hilton KL was also not that impressive and the food took time to get refilled. The one in the Le Meridien was probably one of the best we've had: the kitchen makes noodles for you and there was also an oxtail dish from the buffet The fitness center and the pool with water slide are both located on the Hilton side which is a plus, altho guests from Le Meridien could also access them.