London Hyatt with best Suite and Breakfast

Hello everyone, looking for the best SUA use case in London with good breakfast for Globalist. Planning to stay for 5-6 days in London in the off season. We have already been to London so need to do any of the tourist stuff.

I am between the Andaz, Regency- Blackfriars, and GSY. Would also consider the Churchill.

Goals of the hotel stay- Enjoying a nice suite on the quieter side noise wise, good breakfast at hotel, in Zone one. Location and value between for points- less important.

From our research:

Andaz- Good location, decent food options near by, good train access. Hotel reviews have been spotty. Andaz suite and breakfast are good from the reviews I've read on flyer talk. Can get noisy due to location.

GSY- Good location, better service than Andaz. Smaller suites? Good breakfast options. On the quieter side

Regency Blackfriars- Good location, bigger rooms than both the others? Less upscale. Unsure about the noise and break fast options.

Any recommendations would be helpful. Thank you!