I don't have any experience in hotbit.io, but I already visit that site. I see that there are many tokens and altcoin too. But I don't know about the volume, and it's real or not. If the site is new, then I don't think that the site is the best exchange because there are many other exchanges which have the same service as hotbit.
Maybe they need to prove how good their service so people will know and will choose the site to be a good site. Maybe later I will try to trade in that site, and if the site is really good, I think that site could the alternative exchanges for me.
Their service is really responsive....