Hi Jacqui, First, sorry that you had the damage to your investment property. I know that it impacts your return on investment and enjoyment of ownership. Regarding repair/renovation quotes, it is interesting that your insurer "recommended" a contractor they work with. Many insurers don't. I spoke with my agent, the insurer of a landlord policy with Allstate, and he said that isn't their typical process, to recommend a renovation partner.
Nevertheless, the insurer might have an arrangement with the contractor to provide the work at a discounted price for the referral. That isn't a bad thing as long as you are happy with the quality and competence of the contractor. You should check them out...their licensing with the State of Georgia, reviews, and complaints.
You should probably also get a quote from another contractor to make sure the scope of work suggested is the same and the costs are also in line. Your out of pocket deductible is likely considerable so having control over the costs and being in a position to negotiate with a contractor once you have a settlement amount offered by the insurer based on the adjuster's report, gives you flexibility and also allows you to go back to the recommended vendor and negotiate as well.