I haven't noticed any decline in general cleanliness...

HOWEVER - I do notice a difference between franchise properties and corporate-operated properties, with corporate being cleaner. Aimbridge properties (found all over but many here in Texas) are IMHO extremely poorly-run on all levels, including housekeeping.... also, the vast vast majority of Hyatt Place and Hyatt House are also franchises. Not saying ALL franchises are bad - some are just fine, but I do notice a difference in overall quality at many of them.