It depends largely!
I don't have experience to share really.
But which rooms are we talking about?
Coinpoker?
Try to be clearer that sometimes you can find someone who uses the same rooms to share good experiences.
Yes, mainly Coinpoker (I think it is the most recognized). It also has a decentralized RNG system that I found very innovative.
As for others, I have heard about SWG poker and Blockchain Poker, but I haven't really tried them. I know of some projects that are still in development and little else.
The only thing that worries me about these rooms is security, but I think it is a territory that can grow in the future.
For example, a room where you can directly connect your metamask wallet, you would be giving permission to play (but in no case could someone move your funds with that).
Although I also think it is important to develop a brand that has good associations or hire some professionals to promote themselves.