Hotel in a northern farm is a busy place
I believe the answer is:
ant hill
'busy place' is the definition.
'ant hill' can be an answer for 'place' (I have seen 'bustling place' mean 'ant hill' so perhaps 'place' could also mean 'ant hill'). I am not certain of the 'busy' bit.
'hotel in a northern farm' is the wordplay.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' indicates putting letters inside.
'northern' becomes 'n' (abbreviation e.g. N. Ireland).
'farm' becomes 'till' (I've seen this before**).
'a'+'n'+'till'='antill'
'h' placed within 'antill' is 'ANT-HILL'.
'is a' is the link.
Can you help me to learn more?
(Other definitions for ant hill that I've seen before include "Mound near or forming insect nest" , "Mound of insects" , "soldiers' home?" , "Mountain (of insects)" , "Home for social workers?" .)