I am very interested in any experiences Venture X cardholders have in terms of booking hotels via their "Premier Collection." It seems like they promise breakfast for two, potential updates, potential early/late check in, etc. You also earn 10x miles on booking, which is strong.
https://capitalonetravel.com/premier-collection/
Hotels appear to be exclusively boutique / luxury hotels - but they include some hotels I have stayed in.
Since this has been rolled out, I have seen almost no reviews anywhere.