If you like to stay (or eat) at Accore brand hotels (Sofitel, Pullman, Mercure, Novotel, All Seasons, Ibis, Formula 1) in Asia you really should sign up for thier discount program - Accor Advantage Plus/ Asia. It cost something like 5000 baht to sign up but it pays for itself really quickly.
Benifits:
1) Discounts on dinning - ranging from 25% off if you dine alone, up to 50% off when dinning with others
2) Discounted nights at all their hotels - prices can be accessed via the web or via a phone call
3) Automatic entry into the A/Club points club at silver status for the get go
4) Various other discounts on services offered at the hotels (conference rooms, fitness clubs, massage laundry, business center, etc)
On top of that you get one free night to use at any of the hotels on pretty much any date.
An example of the rates one can get for this hotel:
Deluxe Suite:
Without the membership: $83.68 USD (including tax, but no breakfast) - roughly 2845 baht/night
With the membership: $37.65 USD (including tax, but no breakfast) - roughly 1280 baht/night
Now this is a pretty extreme example - saving over 50% - most cases the savings are less.
I just took a trip to Beijing for business and I was able to stay in a suite for about 10% less than the rest of the crew from my company were booked into standard rooms - at a Novotel.
http://www.accorhotels-asia.com/advplus/default.aspx
OK, so I don't know what happened but the member price of $37.65 is no longer availible - not even close. But member rate I get now is $75.31 (2560 baht).