Love to search a maze of rooms? (9)
I believe the answer is:
honeycomb
'a maze of rooms?' is the definition.
(a honeycomb is a structure of many cells)
'love to search' is the wordplay.
'love' becomes 'honey' ('honey' can be a synonym of 'love').
'to search' becomes 'comb' (combing is a kind of searching).
'honey'+'comb'='HONEYCOMB'
(Other definitions for honeycomb that I've seen before include "structure workers built" , "Bees' maze" , "Structure of hexagonal cells" , "Edible structure of hexagons" , "Natural formation of hexagons" .)