on the other hand, if you can not afford to or don't want to pay a commission, just try craiglist. go to new york craigslist, narrow your search down to manhattan, then upper west side. then further narrow to apts by owner (you can also try "broker no-fee", but in that case the fee is built-into the rent).
as of sunday, 10:15 pm EST, on craigslist there are at least 100-120 postings for rent by owners in UWS that are less than 24 hours old.
Indeed there are many lovely apartments available on the Upper West Side of Manhattan!
I would recomend you check out my blog where I have posted what it takes to rent an apartment in Manhattan. Where are you living now and how soon will you need an apartment?