This should be way easier and more straightforward than everything else.
Get a Google Maps API key
https://developers.google.com/maps/get-started/
Fork the Github repo to your account
https://github.com/owolabioromidayo/swiss_view/
Set up a Netlify account for free hosting with your Github account.
https://docs.netlify.com/get-started/
Deploy the forked Github repo on Netlify.
Navigate to Site Settings -> Build & Deploy -> Environment and add your configuration of the environment variables in .env.local.example of the Github repo[Link] to the Netlify Application
Your website should look something like this. Note that these are scrollshots.