Port Eynon, beside the sea.
“… an old lifeboat house and must be the nearest hostel to the sea in Britain.
“At the high spring tides, the waves break over the front doorstep, and sandbags have to be used to keep the tide out of the hostel,” a report in 1950 noted.
“There are miles of spectacular walks along the cliffs, and inland there is good walking in the hidden valleys, and on the sweeping limestone hills of Rhossili Down…”
More about Port Eynon in John Martin’s historic profile of this hostel open since 1950 and now one of YHA’s partner hostels. https://duncanmsimpsonwriting.com/wp-content/uploads/2021/12/12e-y950001-port-eynon-yh-profile-rev2020-01-01_compressed.pdf
SIMPLY HOSTELS 
Not Boscastle then?
You’re right. Boscastle opened in 1962 so it wasn’t open when that bit was written.