Our group (6 adults) were very happy with our stay here! It was a nicely appointed apartment & very convenient to the subway. We didn't have any safety concerns walking to/fro. The LIRR train does run right outside, but it didn't bother us at all.
Sunshine & Remo were great to communicate with, & I would 100% recommend this apartment for others, with the caveat that it may be most comfortable for only 4 or 5 adults. (Two of our group don't mind a tiny bed so they slept together in the smallest bedroom, but I'd imagine for most people that's not going to fly. There is a futon couch, but it did not seem like it would be as comfortable as the beds. And the skylights overhead (which were awesome!) might make it hard for someone sleeping on the futon to sleep in. Just something to be aware of.)