You get what you pay for - cheap place to crash in a great area.
The positives: Location and privacy. Two blocks from the subway stop, can get into Manhattan or navigate throughout Brooklyn very easily. Lots of restaurants, shops, cafes, etc in walking distance. Oliver also has the "private room" separated from the rest of the apartment unit, so you share a kitchen and bathroom but for the most part have a private unit. And it's about the least expensive option in this area...
The negatives: Noisy, dirty, and hot. Might just be bad timing on my trip, but on the first night I was stayed there was so much noise coming from the shared wall with the rest of the unit. This bedroom was created by putting plywood up between the living units, so there isn't a lot of noise reduction. I was kept up until around 2am because of the talking and noise from that side of the apartment. The next nights it wasn't quite as bad, but still an issue if you're trying to get sleep. Again, maybe it's expected, but when you're paying to sleep somewhere, it'd be nice to actually be able to get to sleep.
The apartment wasn't overly dirty, but dusty, smelly in the kitchen, a little grimy in the bathroom. Felt like an apartment that gets "cleaned", but hasn't had a deep cleaning in quite awhile. Again, for a crash pad it's fine, but far from clean. As for the heat - it was quite cold outside when I visited, and the heat from the apartment kicked in and I couldn't find any way to adjust. Made it very hot in the bedroom, to the point I needed the fan on and no bed sheets. Better to have heat on than not, but still not the most comfortable experience.
Overall - it's a fine place if you're just needing a no-frills place to sleep and aren't looking for any semblance of luxury.