Further to my previous post (#8 ), I googled "enema room" (with the search term enclosed in quotes) to see what showed up. My, my - I was not disappointed. Quite a few references, which you can look up via the links below.
In Russia, an advertised tender for repairs to bathrooms and enema room, see the link https://www.tendersontime.com/tenders-details/current-repairs-bathrooms-and-enema-room-building-address-perm-st-geroev-khasan-24-57d89c4/ ;
In the UK, an advertised tender in 2019 for an Enema Room at Victoria Hospital Wimborne, see the link https://www.contractsfinder.service.gov.uk/notice/83cb5e2b-a1f7-43be-ba8b-d6c27f5171ca ;
Another UK reference to an enema room at the Worcestershire Acute Hospitals, on p.2 of the PDF document, link https://www.worcsacute.nhs.uk/~documents/documents/patient-information-leaflets-a-z/endorectal-ultrasound/?layout=file ; The text excerpt states "On the day of the scan, you will need to have an enema (liquid passed into your back passage) this is to ensure that your bowels are emptied. This will be done after your arrival in the unit. You will be taken to an enema room and the enema will be administered by a nurse; you will remain in this room to ensure you have easy access to a toilet until you have opened your bowels."
And a few more. So, my assertion of enema rooms not so prevalent at hospitals seems to have been wrong. How glad am I about that.........