Under the Activ Assure Diamond plan, if you choose a sum insured of up to Rs.4 lakhs, the room rent sub-limit would be 1%. For a sum insured of Rs.5 lakhs, you get a single private AC room. However, if the sum insured is Rs.7 lakhs and above, there is no sub-limit. You get covered for the actual room rent incurred up to the sum insured.