I remember walking past the Four Seasons the day I tried to visit Prague Castle. The Castle was closed because Medvedev was on the premises. The security forces guarding the hotel entrance were much more imposing (“You stay away or we shoot; or maybe we shoot anyway”) than the guys at the Castle (“Sorry folks, but please come back tomorrow!”) and the clerk at my hotel gave me the scoop.
Note – I made up the dialogue just to describe the difference. And I didn’t dare try to take a picture of the hotel guards!