When you imagine a Japanese hotel, probably one of the first images is a capsule hotel. The Green Plaza Shinjuku is one of them. Conveniently located close to the Shinjuku station (probably one of the world's busiest), it offers one capsule and the use of the Japanese spa area for ¥4,300. Customers are almost exclusively Japanese businessmen, but they accept foreigners. In addition to the right to sleep and the spa area, there are several other facilities, including a bar, an Internet corner (¥100 for 15 minutes), and massages (¥6,000 for a 1-hour complete massage). If you are a male and don't have tattoos (not allowed there), you should definitely try at least one night in a capsule hotel.