As with this example many place=city/town entities are nodes. If you're unable to rely on admin_level, you'll need to iterate the returned boundary relations to return nodes with 'admin_centre' roles. These should contain 'place=city/town'.'place=city/town'. Try expanding on this: node(3127879237); is_in; rel(pivot)[boundary=administrative]; node(r:admin_centre); out geom;

As with this example many place=city/town entities are nodes. If you're unable to rely on admin_level, you'll need to iterate the returned boundary relations to return nodes with 'admin_centre' roles. These should contain 'place=city/town'.