The travel industry is very competitive but it sounds like you have a specific niche targeted - which is good. How deep is your website? Do you provide comprehensive and unique information about Mauritius? Think about offering your visitors a travel guide for the Mauritius area. Research relevant keywords and tailor the content of your site to what you believe people are searching (ie. "Cheap Mauritius Rentals").
Think about setting up an AdWords campaign. Bid on longer-tail queries as they usually convert better and are often cheaper. Also - think about bidding on common misspellings of "Mauritius." I would think that this destination is often misspelled and you will find that the keyword bids are extremely cheap.