This is the briefing room of the Potemkin, an Excelsior-Class starship that was mentioned several times in 'Star Trek: The Next Generation'. It was one of the previous postings of William Riker, before being XO on the Enterprise.
The idea for this room was to create a brand new environment using elements and assets I had already created. I started the whole project yesterday, and completed it in some 8 hours of work. The only original asset I've created from scratch for this room is the table, which is based on the outside shape of the deck 2 superstructure on Excelsior-Class starships.
While Excelsior-Class ships have a Conference Lounge behind the bridge, I'm going under the assumption that the lounge is a much more relaxed environment for officers to rest on, while mission briefings occur on this separate (and more protected) room. A similar arrangement is seen on the Constitution-Class ships, which are from the same era.