Many hostel websites are only created in one or two languages. A hostel is a business that caters to international guests that speak many different languages. You can use the free visitor tracking tool Google Analytics to get a better idea about what languages your guests might speak. You can then translate your website into those languages.
There are several ways to get language-based data out of Google Analytics:
Every time a browser fetches a webpage, it tells the website what language the browser is set to. It also sends an IP address, which identifies what city the visitor is in. Google Analytics records that information and makes it available.
Looking Up Visitors' Browser Languages
Go to your Google Analytics control panel and change the date range to an entire year. The larger the date range, the more accurate the data will be. In the screenshot below I'm changing the date range to cover a period from January 1, 2008 to November (current date).
Then in the left sidebar, click on Visitors and Languages:
You will then see a list of language codes with traffic numbers, bounce rates, average time spent on site, and number of pages per visit.
(Here's a Google Analytics language codes reference page.)
To view the data in a spreadsheet, you can export the data to a CSV file: