The unit is located in a peaceful neighborhood in Asakusa and we felt safe walking around even late at night. Just note that it's about 10-15min walk from the nearest subway stations, so if you have small children, that would be too tiring for them, especially after a day of exploring around the city. Good thing is that it's only about 5-7min taxi ride from Sky Tree mall and Don Quijote Asakusa. And you get to see the Sky Tree Tower all lit up every night from your bedroom window.