Haldon Belvedere, Exeter

1 This striking, Grade IIlisted landmark overlooks Dartmoor National Park with stunning panoramic views over the moors and to the sea in the distance. Its one-bedroom top floor apartment is an ideal romantic retreat for two. Dating back to the 1700s, King George III once stayed at the castle, which boasts typical period architecture. Mod-cons include a flat-screen TV, bath with thermostatic shower, and super-king-size bed.

The roof terrace has a 360-degree panorama, and is perfect for watching the sunset or sunrise.

● A three-night stay starts at £525; oneoffplaces.co.uk