We stayed in the hotel for 3 days and 2 nights in a premiere pool villa for my birthday weekend. Our stay was absolutely perfect. They provided a free shuttle from and to the airport. The staff were also able to communicate in good English and were very polite and accommodating. My fiance was able to surprise me in my room with the help from hotel staff.
As for the food, we dined in the Western restaurant (Beach House Restaurant KISSHO). The menu changed slighty every day and they were all very good. They had a good variety of dishes. One chef in particular, Mutty, was very nice and friendly and made us feel at home. They were able to make me a cake (for a fee) and sang me happy birthday in the restaurant. They definitely made me feel special on my birthday :)
Our room was also amazing. We had our own private pool and our villa was very spacious. There were some insects in the pool, but that's to be expected when you're in nature. Also, as long as you turn off the lights during the night, there would hardly be any bugs in the pool, which you can also clean with a small net. Everything else in the room was perfect and I honestly could not think of anything that could have been better.
Overall, I would definitely book Seawood Hotel again when I come back to Miyakojima.