It's Hong-Kong administration agency. It's not an embassy.

"Entrance fee: 10 RMB"
POI name: Park Beihai North Gate
POI types: barrier-entrance
OSM data version: 2017-08-17T15:51:02Z
#mapsme

"Exact location"
POI has no name
POI types: tourism-attraction
OSM data version: 2018-07-05T18:22:02Z
#mapsme

In reply to "Quelle est le nom de cette rue ?":
it's a private street surrounding a building. The access is closed by a gate

way/59189097

In reply to "Quelle est le nom de cette rue ?":
It's a military complex. I didn't try to get inside ;)

way/24476455

Hotel1 (OSM data version: 2016-06-01T10:03:02Z) #mapsme

Hostel1 (OSM data version: 2016-06-01T10:03:02Z) #mapsme

"duplicate"
The place has gone or never existed. This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.
POI name: 西四延吉冷面
POI types: amenity-restaurant
OSM data version: 2017-05-11T13:22:09Z
#mapsme

Doubletree by hilton Beijing (OSM data version: 2016-06-01T10:03:02Z) #mapsme

UAstation