We're planning a week-long tourist trip to London for next April and undecided between the Hilton Tower Bridge and the Hyatt Churchill. Assuming that they were the same rates (actually US$300 at Tower Bridge earning points vs. US$250 at the Churchill on a special certificate earning no points, both including taxes) I'm Diamond with Hyatt, so definitely lounge access there, but only Gold with Hilton, so 'probably' lounge access. Churchill looks like a nicer location, but we generally prefer the more modern style of the Tower Bridge.

Any opinions would be appreciated.