noun
convenience; handiness; usefulness
Refers to the quality of being convenient, handy, or useful. Often used when evaluating tools, locations, or services.
このアプリの便利さに驚いた。
I was surprised by the convenience of this app.
駅からの近さと便利さがこの部屋の魅力です。
The proximity to the station and the convenience are the appeal of this room.