When visiting Lastovo Island there are quite a few places for you to spend the night.
Anchoring here in Veli Lago is not recommended because the depth is about 30 meters. Jurijeva luka just west is better or you can go to Mali Lago or Zaklopatica or Skrivena luka. Depends on the wather forecast.
We were there in low season and there was no one to be found at Veli Lago and the moorings in front of hotel Solitudo. The divers were fixing the moorings, but other than that, there was nobody there.
We couldn’t even get a cup of coffee anywhere. But the silence and the peace… it really is worth sailing Adriatic off season.