'Deceptively roomy' base used instead of a vacated lobby (10)
I believe the answer is:
speciously
'deceptively roomy base used' is the definition.
I can't judge whether this defines the answer.
'instead of a vacated lobby' is the wordplay.
'instead of' becomes 'specious' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a vacated' means to remove the middle letters (internal letters vacate the word).
'lobby' with its centre removed is 'ly'.
'specious'+'ly'='SPECIOUSLY'
Can you help me to learn more?
I've seen this clue in The Independent.
Want a hint initially instead of a full solution?
Install my app