Came across this thread just now.
I have stayed at five of the hotels in KL mentioned above.
First the Hiltons. Doubletree is nice but one side of the hotel faces the apartment next door so unless you can avoid them for sure you will look at nothing. In that part of Ampang, you have Jaya Grocer supermarket (good for imported incl Aussie foods but cheaper to wait till you get home unless no healthy alternative) & food places in the Intermark plaza below. Walk over the airbridge to the Intercon hotel and some more local foods. Walkable from there to the Traders Hotel KLCC but then a long walk to Suria KLCC shopping centre and the twin towers unless you can sneak on the free hotel buggy. Lounge offering is on the weaker side.
Hilton Sentral, above Sentral station and its PT convenience. Very nice rooms, great lounge (ambience/food & drink offering). I actually don't like it's location that much.
Novotel KLCC - great less pricey option. Treats platinum guests well. Every stay I've received upgrade to a suite (not the best corner suites though) Not sure if any other Novotel has a club lounge and the food is ok. Wine, always 2 reds, 2 whites (bonus 1 of each is always Aussie of drinkable standard). Bukit Bintang convenience, airbridge to Pavilion Shopping mall. Cosway mall across the road for cheap local foods. Same bridge (air-conditioned so comfortable but nowhere along the way to sit to rest) leads to a long walk to Suria KLCC shopping mall, I quite like this hotel. The lobby cafe makes a decent barista pulled latte (rare in KL) The attendant seems to be trained to use them, just like they do here in Aust.
Pullman, on an adjacent road to the Novotel. Connected to the Pavilion by airbridge inside the BanyanTree next door. My pick of the 3 Accors I've stayed at. Nice rooms, best club lounge of the three. Classy plates of the day where you can have multiple of. The wine changes regularly and I've had some very good French Bordeaux, Spanish Tempranello, Aussie Cab Sav. It's recently invested in barista style coffee machines but unfortunately not many staff have been properly trained to use them (definitely not the ground floor restaurant where it's free for ALL elites otherwise RM26 each at breakfast).
Sofitel Damansara, new Pavilion shopping mall across the road, older DC mall next door with a Jaya Grocer supermarket in the basement and mainly food outlets. Nice rooms but cheap not well padded bed mattresses. Great pillows though. The club lounge wine offering is the poorest of the 3 Accors (even though it's the only one with a sparkling wine plus 1 red, 1 white). The food offering is probably on par with the Novotel. Classier surroundings but quality wise, no better than. It has barista coffee machines but the staff in the lobby cafe have no clue to making a good coffee. It's the cheapest Grab ride from KLIA. The MRT station is connected to the Pavilion Damansara so only 4 stations to Bukit Bintang. It's location is ok, still very convenient.
Hope this rather detailed rundown from my perspective helps. Wonder if there's a limit in the permitted length of a post.
If you' like shopping centres, you must not miss Mid Valley in Bangsar with its Mega Mall and the Gardens-food, shops galore. Cheap LRT ride to Abdullah Hukum station to access or Grab ride from Sentral (just as cheap but less time consuming it you're staying at Hilton Sentral).