yes, in 2001 ...
I was crew on one of 4 boats chartered from Sunsail in Trogir. (The charter company has another name which I cannot retrieve at the moment, but it is wholly owned by Sunsail.)
The coast and its islands are beautiful and (in September) not heavily trafficked. We visited Hvar, Split, Vis (visit the blue grotto at Bisevo!), Lastovo, Mljet (beautiful National Park), Korcula. The sailing can be beautiful, but also treacherous. There are winds (Bora) which are the result of air spilling down the coastal mountains which can attain velocities up to force 8 and even higher. You have to keep your eye on the Meteo reports and have a
safe harbor available within a few hours' sail.
Anchoring out -- except in bays -- is basically not possible due to the steeply sloped coastline. More than 3 boat lengths from shore, the water will be 100 ft deep!
People are friendly, but not much English is spoken in the smaller places. We were saved by having Italian speakers on board. (A second language in the region is Italian).
Prices for food are not low. Restaurants cost as much as a restaurant in a
large European city. (Greece is cheaper, for example).
Anchorages in ports were a bit outmoded, anchoring stern to, using your own anchor, instead of pre-sunk anchoring points as is the case now in most European ports. [The problem with dropping your own anchor, aside from being a bit tricky, is that you can find your anchor fouled by someone else's when you are ready to leave in the morning...]
We found our boat in shameful condition on delivery in Trogir. 1/4 inch of encrustation on the hull, and lots of broken bits and lights which did not work, etc. We berated the checkout crew for the condition of the boat, and were told that they had had no time to deal with these problems since the boat just arrived -- from the Caribbean. It seems that Sunsail is chartering the boats 2 seasons per year, one in Croatia, the other in the Caribbean.
You should get a copy of a pilot guide to Croatian waters.
If there is anything else you want to know ...