And I would suggest the opposite! LHR Ren is less expensive than Marriott, the exec lounge offerings are robust, and the lounge has the fantastic runway views. Downside is rooms are small & tired & due for a reno (ground floor has been reno'd), but for a quick overnight stay before a morning departure, LHR Ren is my 'go to' airport hotel. Staff is nice there. Don't know if they still do it, but last time I was at Ren as an elite I was offered a glass of champagne or o.j. at check-in.

Cheers.