Not hard, just under the passenger kick panel. Kick panel comes off with 1/4 turn clips, then underneath there is a large black plastic cover. Two T20 screws on the rear(nearest the passenger) and the cover drops down and pulls out towards the rear of the car.
When installing the cover make sure you slot the rear tabs into their holders, then put the screws in. Otherwise the back droops down and you can get condensate in the floor.
For future repair instruction needs, Newtis is a good resource.
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