If you were looking for cottages like Serpentine, how about trying these:
Holiday cottages in The Lizard
Holiday cottages in South Cornwall
Serpentine is a beautifully styled lakeside cabin, located right in the heart of The Lizard Peninsula at Trevassack Lake. Named after the iconic stone that was once quarried here, this unique and contemporary cabin is located in a disused quarry, home to the Children's Sailing Trust, which has now been transformed into an accessible Watersports Centre (Easter to the end of October). Sleeping up to five people and welcoming pets, this gorgeous home is one of six accessible properties on site, making this the perfect place for families or smaller groups to enjoy.