Not disagreeing, but as discussed previously with your 'coffee breaks' some QF and VA aircraft can have an hour to two hours in the middle of most days sitting at a gate because passenger demand is lower, particularly Monday to Friday. On Saturdays, the leats busy day, there tend if I am not mistaken to be fewer aircraft in service on the mainline routes so gaps at 'stations' in the middle of the day may not be as great, while Sunday starts to get busy from 1200 'high noon' or 1300 hours onwards.
The weekday midday lull is when I'd like to see cleaners specifically engaged to wipe down tray tables, get the vac out for those hard to reach areas under seats, look for crumbs and anything else in the small gaps between seats and so on.
Metro Trains Melbourne and Sydney Trains (one a private franchisee, the other government) have cleaners who quickly come through at terminii, or sometimes at (say) Flinders Street for Metro, and granted, the carriage designs are easier on cleaners with it being much easier to use a broom, no carpet (only hard vinyl, other similar material or Pirelli rubber floors) and less bending required (unlike in Y on airlines where seats can be close together, and are much higher to boot) so why can't QF and VA with their multi billion dollar revenues pay more attention to cleanliness during the day?
With food (and drinks) distributed to passengers, crumbs on carpet are inevitable, and marks on tray tables fairly common. It's grotty when passengers are paying a minimum fare of $90, and probably a median Y fare of $140 or more for a 1.5 hour trip to board and find crumbs or slight traces of liquid on the tray table, and it's now 1500 hours so the aircraft hasn't received much cleaning attention since prior to 0600 hours.
It's very good that some airline cabin crew 'clean', but they clearly cannot or do not clean every surface.