Room 677 was very disappointing. The sound insulation is extremely poor, and noise from outside the building can be heard very clearly. Every morning around 5, 6, and 7 a.m., there was a loud and disturbing noise coming from outside, making it difficult to sleep and rest properly. For a hotel room, I expected a much quieter environment. I hope the management can address the noise issue and improve the soundproofing for future guests.