indoor antenna?

Sugarbrie is right, FM carried by cable would probably be your best approach. If not, I've found the FM Reflect carried by ccrane.com ($30) to best DIRECTIONALLY my Fanfare and Dynalabs antennae. So line it up and stick it to the wall.

When I lived in NYC and inquired about FM via cable TV (Time Warner)I was told that it was "discontinued because they never got it to work right". I used a "Silver Ribbon" with some success. It had to be reoriented for different stations. I suppose that was a blessing in disguise as weak signal strength was not as much of an issue as much as multipath was. Living between the Twin Towers (hard to believe they are gone) and the Verrazano bridge made over the air TV reception complete with 7 ghosts for each character (football games looked like riots). Fellow New Yorker's reported that amplified antennas like the Terk made things worse, amplifying superfluous noise. Good luck.

P.S. you may have the legal right to an antenna despite your buildings objections.

Unsound is correct. One of the recent communications bills in Washington greatly reduced the ability to ban antennas/satelite dishes, etc, by building and neighborhood associations, and other zoning variances. If you are a tenant (paying rent) you may be stuck.

Fanfare FM-2G