Blue Boat Guesthouse Haeundae is a guesthouse in Haeundae, Busan. Self check-in without staff lets guests receive a key and enter late in the evening. The second floor is mixed and the third floor is women-only, with shared toilets, showers and a powder room, and drip coffee is served in the morning. Beds on the second floor are inconvenient to climb in and out of.