IMO - hard product is definitely the best in the portfolio. service would be up there too.
I have had stays from 2 nights to 7 nights. shorter the stays, better the upgrades
im not a drinker so happy hour doesnt really affect me, but the 1 free JW gold label (per guest per night) drink goes down well, can use cumulatively.
i had a back to back stay at the Athene in a suite (refurb) but still preferred STR.
Still my goto place in bKK