Small Enclosed Space or Tiny Room
This page is the CodyCross answer for the clue below from London, Group 497, Puzzle 1 (Buckingham Palace).
Question is: Small Enclosed Space or Tiny Room
and the answer is: CUBBYHOLE
Word Meaning:
CUBBYHOLE — A small, snug room which may be used as a place of privacy and safety by children
Definitions from Wiktionary.