Rialto ideally suited (10)
I believe the answer is:
tailormade
'ideally suited' is the definition.
I know nothing about this answer so I can't tell whether this works.
'rialto' is the wordplay.
I cannot really understand how this works, but
an anagram of 'rialto' is 'tailor' which is within the answer.
The remaining letters 'made' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for tailormade that I've seen before include "with precision design?" , "Custom-built" .)