This converted water tower in the National Trust's Trelissick Garden looks like an amputated lump of Hogwarts – you could enter into the spirit and spend a week in fancy dress … Photograph: PR
With just one room per floor, it sleeps two in eccentric splendour.
• 0844 800 2070, nationaltrustcot-tages.co.uk. From £471 a week (£235pp) Photograph: PR
Like his biscuits, Prince Charles's properties are toothsome and pricey. The 400-year-old Restormel Cottage on his huge estate sits in a wooded valley as photogenic as a Country Life centrefold … Photograph: PR
It sleeps five and facilities include an indoor pool and tennis courts. Every sofa throw and doorknob is perfect as you'd expect.
• 01579 346473, duchyofcornwallhol- idaycottages.co.uk. From £650 a week (£130pp) Photograph: PR
Mousehole is an overstuffed town, with street upon wriggling street piled around its bustling harbour. Here is a cottage to match, packed to the whitewashed rafters with trinkets, rugs and hangings, which contribute to what the owners describe as a "Moroccan theme" … Photograph: Charles Francis
A narrow garden is the icing on the cake, making Creel, which sleeps four, genuinely charming for those who don't insist on isolation.
• 01275 395430, sawdays.co.uk. From £349 a week (£87pp with full occupancy) Photograph: Charles Francis
Up to its Farrow and Balls in muted tones and trappings, The Sea Room sits between woods and the water and peers out over St Austell through a big french window … Photograph: PR
With no road access but its own slipway, it's an adorable, triangular, if expensive, hideaway for two. The location is near perfect.
• 01872 553491, boutique-retreats.co.uk. From £1,100 a week (£550pp) Photograph: PR
Google overflows with overpriced Cornish "hideaways" with twee names that belie their drabness. Not Office Cottage, a tiny building sleeping two by a river, a mile's wooded walk from the nearest village … Photograph: PR
Inside it is unaffected, complementing the untamed forest on all sides, in which the owners have been proudly practising permaculture "since the 1980s". It is well-priced, even in midsummer and, if you're willing to brave the bus network, there's a discount for car-free guests.
• 01209 860458, kennallvale.co.uk. From £300 a week (£150pp) Photograph: PR