Not Doubletree, any hotel. The spectrum of standards can vary wildly within a brand. Although now that TripAdvisor is allowing hotel satisfaction surveys direct links to their reviews, TA has become more suspect.
Last month, I was at an HGI and the entire front lobby was under construction. No Lobby, no bar, no restaurant. The three reviews (forwarded by Hilton.com) mentioned none of this while my review talked all about it. I will be driving by there next week and I know it is not done. TA is now allowing both IHG and Hilton to post their reviews direct.