I searched for
Topguest and didn't see any mention of it on FT. I'm not sure if this belongs here, or Travel Technology, or maybe S.P.A.M. but according to their FAQ you earn points in the program of your choice, not pseudo-points.
From
TechCrunch:
Right now it sounds like you can only earn rewards at The Standard hotels but their FAQ makes it sound like SPG points and Delta SkyMiles might be next up.