Pullman Grande is quite an old hotel. Formerly Grand Millenium Sukhumvit. Shower pressure is lousy and beds are so so.
IMHO the best 5 star +++ hotel in BKK which always goes for steal rate is COMO Metropolitan. It's not a new hotel but upkeep is better than even Sofitel Sukhumvit IMHO. It's a bit far from Sukhumvit but it's class with COMO Shambala toiletries. And by staying there u support SG too! If you wanna bring back a chio hi-so wannabe to your room for a wild time, this hotel should be on your list!