In the recess, it's nice to tour Southend (5)
I believe the answer is:
niche
'in the recess' is the definition.
I can't judge whether this definition defines the answer.
'nice to tour southend' is the wordplay.
'to tour' is an insertion indicator (to tour can mean to go around).
'southend' becomes 'h' (I can't justify this - if you can you should give a lot more credence to this answer).
'nice' going around 'h' is 'NICHE'.
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for niche that I've seen before include "comfortable situation" , "Recess; place in life" , "Specialised corner of the market" , "Speciality" , "hole" .)