Resort on the right is more pleasant (5)
I believe the answer is:
nicer
'more pleasant' is the definition.
('nice' is associated in meaning with 'pleasant')
'resort on the right' is the wordplay.
'resort' becomes 'nice' (French coastal resort).
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'the right' becomes 'r' (common abbreviation).
'nice'+'r'='NICER'
'is' acts as a link.
(Other definitions for nicer that I've seen before include "Even more 7 down!" , "harder to please" , "improved" , "More pleasant or fine" , "more likeable" .)