Our first time to the area and we all had a good stay with my 4 kids (27, 17, 8, 8) and daughter-in-law. The younger kids loved the easy beach access, the abundance of provided beach toys, and the cool bunk beds. The adults appreciated the view from the rear facing bedrooms, beach chairs, and the many bikes to choose from.
The only real downside were the horseflies and jellyfish which on a muggy, calm day were overwhelming. On arrival in the afternoon we went pretty much straight out to the beach with my twin 8 year olds. Within 15 minutes in the water my son was stung on the wrist by a floating jellyfish. The small jellies washed up on shore should have been a clue. My son didn't want to leave the beach and he pushed through some intense pain and tears. We all stayed out of the water from that point and began to dig in the sand. Within minutes we had all endured horse fly bites and spent a lot of our energy trying to slap them away. We gave up in about another 15 minutes and multiple bites. I had 7 welts and my kids had 5 painful bites between them. That experience almost had us give up in Broadkill beach altogether and we drove to either Rehoboth or Lewes for most days. We did try again on a cloudy windy day and had a much better experience on the beach in our backyard. We never saw another jelly so maybe it was a fluke. I relate this story because I think the level of "ruin the day" capability the biting flies have on this beach is downplayed some.