Sword Art Online

Volume 9
Kirito takes a bath at a church.

Sword Art Online: Aria in the Starless Night
Asuna Yuuki takes a bath.

Episode 6
In the episodes end card, Asuna Yuuki is shown taking a bath clothed in an outdoor Bathing Pool. 

Episode 15
Suguha Kirigaya has an Off Screen Shower and then an Off Screen Bath later at night. She attempts to get Kirito to take a bath because he seemed really cold while he sat in his bedroom depressed.

Episode 18
Suguha Kirigaya has a Furo session.