Hot man I love is a little flat (6)
I believe the answer is:
studio
'a little flat' is the definition.
'studio' can be an answer for 'flat' (studio is a kind of flat). I am not certain of the 'a little' bit.
'hot man i love' is the wordplay.
'hot man' becomes 'stud' (stud is a kind of man. I am not sure about the 'hot' bit.).
'love' becomes 'o' (love means zero in tennis).
'stud'+'i'+'o'='STUDIO'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for studio that I've seen before include "Workplace for artist, photographer etc" , "An artist may work in this room" , "MGM, for example" , "Elstree area" , "Unpleasant vapour" .)