Well I was not Plat yet when I stayed at the below but as a Gold, I did get a few perks:
- Sir Savigny Berlin: upgraded to a higher cat room
- Fresh Hotel Athens: upgraded to a suite
I agree with thomasito though, most of these DH are small, cozy and feel personal compared to most chain hotels. I think the only thing I'd appreciate (but don't expect) from a DH is an upgrade, any upgrade.