Ishigaki Hotel East China Sea (石垣島ホテルイーストチャイナシー) is located only a few mins walk from the port terminal in Ishigaki. I did arrive a little early and was planning to drop off my luggage and go off for an adventure. But the lady at the reception desk told me that it was perfectly fine and I can check in now, before 3pm. I booked 2 nights here, and the total came to 15,760 Yen and it was payment on arrival. My room was on the 2nd floor at 204. I booked a Japanese styled room with no breakfast which was fine since I only needed a place to crash. A comfy place of course. Also if you need to heat up your food there is a shared microwave just next to the lift area. My room was front facing the port, the weather was horrible but humid. Staff here were extremely nice and welcoming, I would definitely want to come back here in the future.