Loss of situational awareness. On 16 August 2007, a MD83 departed Lisbon with the Co-pilot as Pilot Flying (PF) on a scheduled passenger flight FLT344E to Dublin, Ireland. The flight progressed without discrepancies until commencing its approach to Dublin Airport. The approach was made at night; the weather and visibility were good. As scheduled maintenance on the main runway (RWY 10-28) was under way, RWY 34 was in use for landing. The flight was cleared by Air Traffic Control (ATC) to carry out a non-precision approach to RWY 34. During the approach, at approximately 5 nautical miles (nm) from touchdown, the aircraft began to deviate left of the approach course. This deviation was due to the Flight Crew mis-identifying the lights of a 16-storey hotel at Santry Cross as those of the runway approach lighting system on RWY 34. The aircraft continued to descend below the Minimum Descent Altitude (MDA) without proper visual recognition of the runway in use, and descended to an altitude of 580 ft above mean sea level (AMSL) before ATC issuing instruction for right turn and climb. At the point the go-around commenced, the aircraft was approximately 1,700 ft from the building and 200 ft above it. The aircraft subsequently landed without further incident after vectoring for ILS approach for RWY 16.