Override Template Files
All the WP Hotelier template files can be found in the /wp-hotelier/templates/ directory. To override one of those files, create a /hotelier/ folder in your theme (for example your-theme-folder/hotelier/. Then copy the file from the /wp-hotelier/templates/ directory in your-theme-folder/hotelier/ keeping the same file structure but replacing the /templates/ subdirectory with /hotelier/.
For example: to override the page archive title, copy: wp-content/plugins/wp-hotelier/templates/archive/page-title.php to wp-content/themes/your-theme-folder/hotelier/archive/page-title.php
The copied file will now override the WP Hotelier template file.