The four main factors that you will want to take into consideration when looking for a LTCI policy are: flexibility, eligibility, inflation, and duration.
Check to make sure that the flexibility of your policy allows for personal help so you can stay in your home for as long as possible before assisted living is absolutely necessary. Some of the policies will allow you to be paid cash for you to distribute as you please.
Make sure that your policy will pay for more than just what is medically necessary. These policies may not cover all of your needs.
Make sure that you are protected against inflation; you can place a clause into the policy that your payout adjusts 5% annually to cover you against raising prices.
Remember that a policy which lasts 5 years is probably more than you would need. A policy of two to three years will generally be enough.