Comfortable spot according to Otto I in north-east (5)
I believe the answer is:
niche
'comfortable spot' is the definition.
'niche' can be an answer for 'spot' (I have seen 'Suitable spot' mean 'niche' so perhaps 'spot' could also mean 'niche'). I am not sure about the 'comfortable' bit.
'otto i in north-east' is the wordplay.
'otto i' becomes 'ich' (I am not sure about this - if you are sure you should believe this answer much more).
'in' indicates putting letters inside.
'north east' becomes 'ne'.
'ich' inserted inside 'ne' is 'NICHE'.
'according to' acts as a link.
Can you help me to learn more?
(Other definitions for niche that I've seen before include "A small recess or easy job" , "Particularly suitable position" , "market area for specialists" , "Suitable location" , "Small corner of e.g. market" .)