depends, what is more important comes after gerne.
"Gerne" is a way to accentuate "würde".
"Gerne" means "with pleasure", and after "würde" that means "would like" its a strong accentuation. Normally you say "gerne" after "würde" if you want to express a condition in a wish. It can be followed by "und nicht [...]" expressing something you hate most.
Ich würde mit meinem Mann im Sommer nach Italien fahren
I would like to travel with my husband to Italy in the summertime. You do not need to add "gerne". You express a wish.
Ich würde mit meinem Mann gerne **im Sommer** nach Italien fahren ...
Now you have added "gerne". Now its not only a wish any more. Its also a condition. You would not like to do it in the wintertime ... it is essential that the travel is in the summertime.
Ich würde gerne **mit meinem Mann** im Sommer...
...it is essential to travel with your husband, not someone elses husband ;-) (or another person)
Ich würde gerne **im Sommer** mit meinem Mann nach Italien fahren, im Winter habe ich was besseres zu tun.
... it is essential to travel ("in the summertime" && "with my husband" && "to italy")
Ich würde im Sommer mit meinem Mann gerne **nach Italien** fahren, und nicht anderswohin.
its essential that the travel goes to Italy, and not somewhere else.