The Collaborative International Dictionary of English v.0.48:

Snuggery \Snug"ger*y\, n.; pl. Snuggeries.
   A snug, cozy place. [Colloq.] --Dickens.
   [1913 Webster]

WordNet (r) 3.0 (2006):

snuggery
    n 1: a small secluded room [syn: cubby, cubbyhole,
         snuggery, snug]

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "snuggery":
   alcove, bay, blockhouse, box, bungalow, cabin, carrel, chalet,
   corner, cot, cote, cottage, cove, cranny, cubby, cubbyhole,
   cubicle, lodge, log cabin, love nest, niche, nook, oriel,
   pied-a-terre, recess, roomlet