That is a very nice one. Good choice.
I would place it on whatever south facing wall you have (even if it isn't an outer wall). Whatever south facing wall is in your TV room, as close to an outer wall as possible. Right in the middle (vertically) of the wall so you don't get blocking from the roof or floor.
If you don't have south facing windows, placing it in a window will do absolutely nothing. As south as you can in your apartment is going to work best. Even if it's on a solid wall.
If this doesn't work, you might look into the kind of antenna that uses the electrical wiring in the house. I've never used one like that, but in an apartment building, that may be a really nice choice.
I have a similar issue as you...we live way out in the burbs about 30 miles from the broadcast towers...BUT we have a couple of mountains right in the line of sight. The only place I can get an antenna to work is in our garage, and even then, I only get about half of what we should.
And final advice....the cable company should offer a very basic package with the local channels only for somewhere in the $10 - $20 per month price. I'm just throwing this out there. Also, there are internet subscription services like YouTubeTV for the same thing, but I'm not sure the cost.