I've stayed at The Dunes many times before. I like thatvthey allow pets. It's one of the reasons my wife and I usually stay there. That and the proximity to the beach we like to go to in Delaware Seashore State Park.
Our stay this time, however, wasn't so great. The room itself was clean, but there was a strong smell of wet dirt inside the room. We checked everything and we found out the smell was coming from the air conditioner.
I figured I would just get used to the smell and nose blind to it after a while, which wasn't the case the first night, but was the case the second night. My dog that was with us, didn't seem to be bothered by the smell.
Then there was the issue of the tv not working. We could use the remote to turn the tv on and change the volume level, but that was it. When we turned it on, since we couldn't get to the channel guide or change the channel, our only option was the Hallmark channel which was playing Christmas themed movies. Thankfully, my wife brought her laptop and a hdmi cable so we connected her laptop to the tv and were able to watch the Olympics.
Other than those 2 issues, our stay was fine. We were on the first floor, which we liked because we had our dog with us. We like the proximity to everything. They have a little dog bathing area outside that you can wash your dog and yourself off after a day at the beach.
We'll most likely stay there again in the future.