Why shared areas defeat a standard schedule
A kitchen used by forty people deteriorates continuously rather than at a steady rate. Cleaned at seven in the evening, it can be unacceptable by eleven the next morning. Increasing the frequency helps and does not solve it, because the underlying issue is that dozens of small acts of use are happening between attendances and none of them is the cleaner's and none of them is something a schedule can anticipate.
The result is a complaint about cleaning standards that cleaning cannot fix. Providers know this and rarely say it during a comparison, because it sounds like an excuse. Raising it yourself changes the conversation: you are then discussing a shared arrangement between the provider and the users rather than an unattainable standard for one party and it usually produces a better arrangement than another increase in frequency.
