You could have a low budget trip. Try finding cheap flights and then other deals online for hotel stay. Other things that you could do to cut down cost would be avoiding hotels and rent a holiday house. They are usually cheaper and come in all sizes. The island's focus is Tourism, hence it can be quite expensive; as the government is balancing the economy on profitable touristic base businesses in all areas of the country. Eat out on the streets, the food are usually okay and safe. Try local restaurants, chinese, indian style restaurant. Use public transport, such as buses, or rent a car out. Taxis will cost you enormous money too, since they have prices for tourists and locals. Rent out a car for two days and do an island tour, but a coastal one, usually people around the coast are the friendliest, try to go back to your accommodation before late night, and go to a nearby bar, club for drinks. Mauritius and Mauritians start the day off early and finish it off early too. On Sundays most stuffs may be closed or open until noon. 7 days trip is more than enough.