There should be a sign that provide direction to or information about interior spaces and facilities that meets the ADA sign requirements (Toilet Rooms and Bathing Room Directional Signs. ADA Standards 216.8), which this does not.  There are also requirements regarding for the signs (ADA Standards 703.5)

216.8 Toilet Rooms and Bathing Rooms. Where existing toilet rooms or bathing rooms do not comply with 603, directional signs indicating the location of the nearest toilet room or bathing room complying with 603 within the facility shall be provided. Signs shall comply with 703.5 and shall include the International Symbol of Accessibility complying with 703.7.2.1. Where existing toilet rooms or bathing rooms do not comply with 603, the toilet rooms or bathing rooms complying with 603 shall be identified by the International Symbol of Accessibility complying with 703.7.2.1. Where clustered single user toilet rooms or bathing facilities are permitted to use exceptions to 213.2, toilet rooms or bathing facilities complying with 603 shall be identified by the International Symbol of Accessibility complying with 703.7.2.1 unless all toilet rooms and bathing facilities comply with 603.

https://www.ada.gov/regs2010/2010ADAStandards/2010ADAstandards.htm#pgfId-1010471\