I don't know what your criteria are, but I have some experience with this. I lived on Honshu Island for 5 months, Penang Island for 2 months, and Manhattan Isla

I don't know what your criteria are, but I have some experience with this. I lived on Honshu Island for 5 months, Penang Island for 2 months, and Manhattan Island for 2 years. I recommend all three. The pitfalls: 1) the islands are somewhat expensive compared to many other islands, although there are inexpensive locations on all three 2) and they are somewhat noisy and distracting.