The Observation Lounge is directly aft of the Main Bridge. It is used as a conference room for the senior officers and visitors for ship’s business. All mission briefings for the senior staff are held here. In addition to its meeting capacity, it can also be configured to serve as a formal reception area for VIPs.
The Enterprise-E lounge set was actually a redressed Enterprise-D lounge set. The chairs and table (though re colored) remained the same.