Investing in mainland Tanzania is still very lucrative, as land prices have not yet gone up too high.
Also real estate prices for land near the famous national parks are still very affordable.
Moreover, there is still a shortage of safari beds in Tanzania. During high season months, all good existing lodges and safari camps are as good as full booked, with touroperators grabbing for the available rooms. Investing in a safari lodge or camp is almost guaranteed to get good occupancy rates.