My router in the meter cupboard near the front door works fine throughout the house. Even in the backyard - with the sliding door closed - I used to have a reasonable signal. Since HR ++ glazing has been installed, only signal with the front open. If closed, so no signal in the garden.
This repeater is plugged into a socket in the room at the rear of the house. The signal is now closer and does pass through the HR++ glazing!
The disadvantage is indeed that you have to come up with something to use the adjacent toilet. Therefore a 230V splitter is used. Then he comes a little further forward,