"Its on adjacent building on the other side of the road"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-05-28T17:19:44Z
POI name: Embassy of Japan
POI types: office-diplomatic
#organicmaps android

"There's also the diplomatic section of the Embassy separated by a building"
OSM snapshot date: 2024-05-28T17:19:44Z
POI name: سفارة اليابان
POI types: office-diplomatic
#organicmaps android