We just confirmed one of our rooms at Hyatt Regency HKG into a suite with a DSU. Unfortunately no connecting rooms appear to be left for the second room, will be a real hassle is we cannot get that worked out.
Also tried to use one on cash+points reservations at Park Hyatt SGN a week later, but hotel is pretty much all booked. Will be the first time in 10 years staying there that we have to slum it in two regular rooms, instead of having one suite ;-) Oh well, the long breakfasts and nice pool here make up for that!