I know I haven't been able to write my Surawongse Marriott review yet, but it's coming soon. Here is my subjective ranking of the Marriott properties I tried out in Bangkok:

1. Sheraton Grande Sukhumvit - incredible staff, incredible room comfort, incredible macarons, incredible pizza - easily my best hotel stay ever
2. Athenee - great upgrade, great bed, nice service, tasty breakfast, like the location
3. W - great bed, really amazing lobby bar experience and staff
4. Westin Grande Sukhumvit - nice suite, fantastic breakfast, it's a Westin - what can I say?
5. Royal Orchid Sheraton - great bed, great views, breakfast a bit chaotic, but I liked the lounge
6. Marriott Marquis - awesome welcome gift, lovely restaurant breakfast offered, comfy room
7. Le Meridien - nice design, great shower, bed could be less firm
8. JW - nice staff, nice design, bed lumpiness should have been fixed by Housekeeping
9. Marriott Surawongse - comfortable bed, nice shower, lounge breakfast only a bit of a downer
10. Marriott Sukhumvit - no suite upgrade, staff was friendly, bed needed updating, poor view directly into an apartment building
11. St Regis - terrible view, tacky upsell sheet, nice bed, I enjoyed breakfast
12. Renaissance Ratchaprasong - suite too hot, bed a bit too firm, nice service and correction by Housekeeping, lounge breakfast only a downer

As always, full reviews are in the master threads (Surawongse coming soon). Off to the Conrad and then to KL for more Marriotts!