I agree, I spent 70 nights there at the start of this year and would return, my favourite hotel in KL. The lounge is great, and the gym (shared with the Hilton next door) is much better than most hotel gyms I have seen. The downside, though, which applies to all Le Meridiens that I've stayed at, is that the rooms do not age that well. When I get a good room at a Le Meridien, they're great, but some of the rooms have seen better days. I think it's because the brand's design identity is integrated into the room, rather than just furniture and paint on a wall, there's wood panelling and fabric and integrated desks... it has a strong brand identity, but (as with most "Premium" Marriott hotels) it doesn't have a high enough price point to justify the continuous investment needed to keep those design elements looking fresh. Le Meridien KL's last renovation was 8 years ago, which is quite apparent in some rooms. I still love the hotel, though.
Do you have any thoughts on the best rooms at LM KL? I always request a corner room with the big bath tub, but I find the doors to the other rooms slam terribly, shaking the room. I also redeemed SNAs but found that my suite had its bedroom adjacent to an audible elevator. The bathroom drains also had a terrible mildew smell, which is unfortunately common in the region. If I could find a room I was happy with, I'd do a long stay too!