How to clean a really mouldy rental shower and fix the caulk

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   Spraying the shower with vinegar and scrubbing with a hard brush
2. 2
   Planning to replace the shower curtain
3. 3
   Attempting to ventilate the bathroom after showering
4. 4
   Using electric spin scrubbers to avoid manual arm fatigue and bending
5. 5
   Using battery-powered pressure washers for quick cleaning
6. 6
   Using daily squeegees or towel drying to prevent buildup
7. 7
   Keeping a soap-dispensing dish brush in the shower to clean in small chunks during routine showers
8. 8
   Spraying commercial chemical cleaners like Wet & Forget to avoid scrubbing entirely
9. 9
   Using baking soda combined with dawn dish soap, bleach, and hot water with a Scotch Brite pad
10. 10
    Using toilet cleaner or a spray with bleach
11. 11
    Using laundry stain remover
12. 12
    Using a toothbrush for cracks and a water pick for rinsing gunk out
13. 13
    Hiring a cleaning service

In their words

Unedited, most upvoted first, each linked to the thread it came from.