Tanning facility located centrally in resort island, luring frumps? (8)
I believe the answer is:
solarium
'tanning facility' is the definition.
(room containing sunlamps)
I cannot understand how the remainder of the clue works.
(Other definitions for solarium that I've seen before include "Tanning salon" , "conservatory?" , "Room in which people can be exposed to sun or sun-lamps" , "Room for sunbathing" , "Room equipped with sunbeds" .)