For this you want to deploy the Google Mesh system. I won't duplicate how to install, use here but it's nice and easy.
Family have an apartment in turkey and we have no wifi, there is a hotel within about 50m line of sight that has allowed us to use theirs. We can connect fine using my iPhone if we are on the balcony but as soon as we go into the apartment the signal goes.
Is there any we can add a piece of hardware to repeat the signal using antenna or similar so we can get the signal in the apartment.
Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic