
Sea Gem is an elegant three-storey house in Castletown on the Isle of Portland, Dorset. This property sleeps seven guests and offers private parking for two cars plus ground-floor accommodation making it perfect for multi-generational groups. The enclosed courtyard with astroturf play area provides safe outdoor space for families.
Castletown sits within a conservation area on Portland's dramatic coastline. You're just one mile from the beach and walking distance to Portland Marina, castle and local amenities. The village offers easy access to Dorset's spectacular coastal attractions.
The house features four bedrooms across three floors. Ground floor has a small double bedroom with access to a Jack-and-Jill shower room.
Sea Gem is an elegant three-storey house in Castletown on the Isle of Portland, Dorset. This property sleeps seven guests and offers private parking for two cars plus ground-floor accommodation making it perfect for multi-generational groups. The enclosed courtyard with astroturf play area provides safe outdoor space for families.
Castletown sits within a conservation area on Portland's dramatic coastline. You're just one mile from the beach and walking distance to Portland Marina, castle and local amenities. The village offers easy access to Dorset's spectacular coastal attractions.
The house features four bedrooms across three floors. Ground floor has a small double bedroom with access to a Jack-and-Jill shower room. First floor contains a double bedroom and family bathroom with bath and shower. Second floor offers a king-size bedroom and double bedroom, both with en-suite walk-in showers. The fully-fitted kitchen includes Nespresso machine and dishwasher, whilst the sitting room has Xbox and Smart TV.
Groups can explore Portland Castle (walking distance), D-Day Centre & WW2 Museum (1 mile), Weymouth's beaches and attractions (6.2 miles, 15 minutes) and Dorchester's historic sites (12.8 miles, 25 minutes). The Rodwell Trail offers scenic coastal walks whilst Tout Quarry provides sculpture trails.
Sea Gem combines luxury accommodation with an unbeatable Portland location. Perfect for families and groups wanting coastal adventures with modern comfort and convenience.
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View CottageWhat do previous guests think about their group stay at Sea Gem
Guests consistently praise the immaculate condition and beautiful presentation throughout the property.
Perfect for elderly guests or those with mobility needs, with kitchen conveniently next door.
Fully equipped with games, books and all essentials making it ideal for larger families.
Marina, castle, beaches, restaurants and shops all reachable on foot from the front door.
Tastefully decorated throughout with quality furniture and lovely touches like diffusers creating welcoming atmosphere.
Safe courtyard with astroturf play area and seating perfect for families with children.
Find your way to your perfect countryside retreat
To reach Sea Gem by car, follow the A354 onto the Isle of Portland and continue to Castletown. The property is easily accessible with convenient off-road parking for two cars upon arrival.
For those travelling by rail, the nearest station is Weymouth, approximately 6.2 miles away. From there, it's a short bus journey or taxi ride to your coastal retreat in Castletown.
Stuff for larger groups and families to try!
Discover why this cottage is the one for your party or family reunion...
Taste the local flavours during your stay at Sea Gem
Located 0.3 miles from your accommodation.
Postcode: DT5 1BG
Located 0.4 miles from your accommodation.
Postcode: DT5 1AF
Located 0.2 miles from your accommodation.
Postcode: DT5 1BW
Quick answers to our most common questions about Sea Gem



























