My understanding of gulets is that there are motorboats with a mast
to look like a sailboat. If you look at the dimensions of the rigging
you see that it can not be used with whatever wind
conditions, it is just for show.
Enter “la spezia” and “charter” in your favorite search engine
, select map and choose one of the proposed charter
companies. I was there a week ago, the season is very low key, you will not have any difficulty in finding what you want for the 2 of you.