Some more new rents, simply huge (7)

I believe the answer is:

monster

I'm a little stuck... Click here to teach me more about this clue!

'simply huge' is the definition.
'monster' can be an answer for 'huge' (I've seen this before). I'm unsure of the 'simply' bit.

'some more new rents' is the wordplay.
'some more' becomes 'mo' (I've seen this in other clues).
'new' indicates anagramming the letters.
'rents' is an anagram of 'nster'.
'mo'+'nster'='MONSTER'

Can you help me to learn more?

(Other definitions for monster that I've seen before include "Enormous or grotesque being" , "Ogre, demon" , "Huge - beast" , "Gigantic" , "Hideous animal" .)

I've seen this clue in the Evening Standard.

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