I will be staying at a couple of Raffles hotels this summer and:

Raffles OWO = does not accept SNUs
Raffles Jaipur = does not accept SNUs
Raffles Shenzhen = only Junior Suite

at least Raffles Udaipur still takes them.

in the end, those are the properties that I would really feel a benefit from using a SNU. I rarely stay at other Accor brands nowadays, but even if I did, I wouldn’t really care much about a suite in some Movenpick or Novotel.