After all these years Hilton.com looks and works like it was made by an 11 year old kid. Their site still prompts me to tick boxes to accept cookies, what is this crap? Could be due to I'm located in Europe now but still? All you need is one accept button and not several before you can accept the site handles cookies.
Marriott IT is far from perfect but they get the basic things right. Usually. Marriott's app and site runs and looks good as well.