Honshū's southernmost inn has large, Japanese-style ocean-view rooms, some with private toilet (extra cost; all rooms have shared bath) and a roof deck. From Kushimoto Station, take a bus bound for Shiono-misaki (¥200, 20 minutes, hourly) and get off at Koroshio-mae, in front of the inn; note that the last bus out this way departs Kushimoto Station at 6.55pm.
In summer you can request a rooftop barbecue (extra ¥3000 per person).