We had a fantastic time at Horrocks, got great weather, perfect for beach times. The house was well equipped and comfortable for all of us (3 adults 2 kids 1 dog). I was concerned about the previous review which mentioned fleas. There were no fleas in the house. We also did not encounter any sand-flies during our stay. Nobody had a single bite during our time there, sunsets on the balcony were fantastic, more so because of the complete lack of mosquitos.
I highly recommend a walk through the dunes in front of the house in the afternoon.
We brought toys and games for the kids but we won't in future because the house had lots of games for them.
The place is listed as "pet-friendly" but note that it is not fully fenced so keep your dog secured unless you want it wandering off to meet the friendly neighbours!