Hyatt Regency Tokyo from Nishi-Shinjuku Sta.(Underground) | 西新宿駅→ハイアットリージェンシー東京(地下ルート) 2026.10.28 100% underground route from Nishi-Shinjuku Station to Hyatt Regency Tokyo (~8 min walk, rain-free). #shinjuku #HyattRegencyTokyo #TokyoTravel #JapanTravel