I believe the actual entrance is at 60.396160, 25.637480 (v2). The original claim here is that various routing apps try to get to that point via Fredrika Runebergin katu (as the point is closest to that road), which leaves visitors in the backyard.

This location is wrong as well. The location should remain as in the original (v2), and the responsibility should lie with the navigation apps to route using the service road.