It is absolutely necessary to have separate note categories for different departments. Reservations notes are often cluttered with automatic comments from OTAs and those are shown to housekeeping, too. It cannot be expected from housekeeping staff to weed through a sea of notes to find the relevant information for each room. This must be a separate note cetegory where reservation or front office can enter only a short comment for housekeeping (like "baby cot" or "allergy friendly blankets") - this field should be displayed in the app for HK and/or the housekeeping report.

OMG; this would be like Christmas, Birthday and holidays together :-)

Every other PMS system I have used categorises Notes on bookings.
This really is a feature that needs developing In MEWS.

There should be various boxes, one for Housekeeping Notes/ One for F&B notes/ Spa etc ...
These teams can then print off reports for notes just for them, without having to wade through things that are irrelevant

Also one for Public notes ( visible for Guests to see on confirmations and online Kiosks for self check in )

Private notes for Internal notes - visible only for staff & hidden from Guests.

This makes for a seamless guest journey, and eases the work for teams.