Not much to choose between the three IMO.

I think the Hilton rooms are the nicest and the HH lounge is good (if you qualify). Marriott rooms are small and past their 'best before' date unless they have been refurbished recently. Not the best Westin in the land by a long shot but hey, they are airport hotels; not going to be a memorable experience at any of them so pick the cheapest and carry ear plugs .