Suitable place for Otto I in north-east (5)
I believe the answer is:
niche
'suitable place' is the definition.
(I've seen this in another clue)
'otto i in north-east' is the wordplay.
'otto i' becomes 'ich' (I can't explain this - if you can you should believe this answer much more).
'in' indicates putting letters inside.
'north east' becomes 'ne'.
'ich' going within 'ne' is 'NICHE'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for niche that I've seen before include "Suitable spot" , "Well-suited position" , "ideal position" , "somewhere comfortable" , "Speciality" .)