The property was absolutely perfect. Everything was exactly as described. Lots of comfortable couches and chairs, and the kitchen was well-stocked with every possible pot, pan, and utensil you could possibly need. Beds were a bit on the firm side, but we quickly got used to them.
As for the location, the beach is located down a very short path (maybe 100 feet at the most). You're going to want to wear flip-flops because there are burs that could poke your feet as you walk down the path. The beach itself is quiet and uncrowded.
Were there any negatives? Not really. If you need blazing fast Internet, well, you not going to get over 8 mb/s, but this is a small island, so it's just how things are. It's plenty fast enough to do most things, and you're on vacation, so put your phone down and enjoy the island.
Communication from the rental company was excellent. Watch your e-mail after you book because there's a rental agreement you'll need to sign and return. When you arrive on the island, you stop by their office and get your keys. We were getting there after they closed, but they left everything in a lockbox at their office. Checkout was just as easy. We were leaving before they opened, but they have a key return slot.
If you've never been to Dauphin Island, keep in mind that you're going to want to pick up groceries on the mainland, and the rental company will send you directions to a Walmart and a smaller supermarket where you can shop before you leave the mainland. There's a store on the island with groceries, but it's very expensive, so you definitely want to shop on the mainland.
We had a great time and would definitely rent this house again.