did the music hall ever run into any financial troubles?
Yes, in January 1978 it projected a loss of $3.5 million.
Radio City Music Hall
By January 1978, the Music Hall was in debt, and officials stated that it could not remain open after April. Alton Marshall, president of Rockefeller Center, announced that due to a projected loss of $3.5 million for the upcoming year Radio City Music Hall would close its doors on April 12. 
what part of new york is radio city music hall in It is at 1260 Avenue of the Americas, within Rockefeller Center, in Midtown Manhattan, New York City. when was it constructed? The construction started in December 1931, and the hall topped out in August 1932. what kind of events are held here? Dance shows is one kind of event held here. how does the inside of this hall look like? The interior contains a "majestic" grand foyer, the large and lavishly decorated main auditorium, and a series of stairs and elevators that lead to levels of mezzanines. and the outside? Its exterior is notable for a long marquee sign that wraps around the corner of Sixth Avenue and 50th Street and also has visual features signifying the building's purpose. Above the entrance, there are six small bronze plaques of musicians playing different instruments, as well as three larger metal and enamel plaques signifying dance, drama, and song; these plaques denote the theater's theme. is the subway located close? Yes, the "New York City Subway". is littering a problem in this subway? Litter accumulation in the subway system is perennial. Every day, the MTA removes 40 tons of trash from 3,500 trash receptacles. Rats are sometimes seen on platforms. has it ever been expanded since its construction? Plans for new lines date back to the early 1910s, and expansion plans have been proposed during many years of the system's existence. has it ever faced floods? Service on the subway system is occasionally disrupted by flooding from rainstorms, even minor ones.
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Radio City Music Hall [SEP] Bankruptcy and threat of closure
The renovation of the Music Hall started in April 1979. In 1980, the hall reopened to the public. Regular film showings at Radio City ended, and live shows were cut back to holiday showings only. Around this time, the Music Hall started creating its own music concerts. Prior to the reopening, the Music Hall was rented to music concerts, but had never hosted a concert that it created.