They told us they needed to inspect the plumbing:
From GWLRA
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We
would like to inform you that technicians will need to access to your apartment
on Friday 3rd September between 8 am and 4 pm in order to
inspect the plumbing components in your unit, the walls won’t be opened.
The visit will last at least 1h for each unit, the technicians will need to inspect all your bathrooms. Thank you to remove all your belongings next to the pipes and make sure that your bathrooms are clean for the inspection day.
This
inspection is very important in order to prevent future plumbing issues.
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Well it turns out they want to inspect the pipes to see if they can install washer / dryers into our units. They took out our toilets and left a mess on my bathroom floor. What a miserable experience.
GWL sucks.