We spent 3 days in Lopud. It was heavenly. The hotel was so quaint and very friendly. We had a lovely breakfast every morning - many personal touches.
The island is really fabulous, extremely relaxing, great for walks, sailing, snorkling, etc.
The restaurants are lovely too, each better than the next. Delicious seafood with friendly and attentive (but not overly) service! Loved it there - will definitely return.