This website works as an app on iOS. It uses the same URL — once added to your home screen it opens full-screen with its own icon, just like a native app.
1
Open this page in Safari
The Home Screen shortcut only works from Safari, not Chrome or other browsers.
2
Tap the Share button
The square with the up-arrow, at the bottom of the Safari toolbar.
3
Tap Add to Home Screen
Scroll down in the share sheet, then confirm with Add.
Done! The Hostel icon now sits on your home screen, ready to use in full-screen mode.