Little house with only one good toilet (5)
I believe the answer is:
igloo
'little house' is the definition.
'igloo' can be an answer for 'house' (I've seen this before). I'm not sure about the 'little' bit.
'with only one good toilet' is the wordplay.
'with' means one lot of letters go next to another.
'only one' becomes 'i' (Roman numeral. I am not sure about the 'only' bit.).
'good' becomes 'g' (abbreviation).
'toilet' becomes 'loo' (loo can informally mean a toilet).
'i' put next to 'g' is 'ig'.
'ig'+'loo'='IGLOO'
Can you help me to learn more?
(Other definitions for igloo that I've seen before include "Inuit hut" , "Dome-shaped dwelling" , "packed house" , "Snow dwelling" , "White House" .)