Although I have never stayed at the KUL Renaissance, I would like to add that there are actually 2 wings at this hotel. Its 2 hotels linked together with common facilities. The "New World" wing is cheaper than the "Renaissance" wing.

There is now a weekend rate of RM220(before taxes) with b/fast at the JW Marriott which you may wish to consider. IMO the Marriott is in a much better location.