My cousin and I spent 5 days in Elizabeth's apartment in August, it was our first airbnb experience and I think it was the perfect place to stay.
When we arrived Elisabeth's sister, who was supposed to give us the keys, wasn't home (actually she had tried to tell me in advance, but I wasn't able to read my email in time), anyway that wasn't a problem at all because we were given other contacts at the time of booking and, using those, we were able to get the keys in just a couple of minutes.

For NYC standards the apt is very spacious, it was clean, tidy, with fresh linens and plenty of towels ready for us.
The kitchen is fully equipped with microwave, coffee maker etc. There's a big TV in front of a comfortable sofa, a small dining table perfect for the two of us and the strong shower in the bathroom was a blessing to end the day with. We also appreciated the fast wifi.
Though in Manhattan, the apartment isn't reached by traffic noise. It's well located with lots of cafes, restaurants and delis all around, just one block from a pharmacy, a couple of supermarkets and subway line 1 and a few blocks from B and C lines and the neighbourhood felt very safe. There are also a few useful bus stops within a few steps from the building.
Bus M60 from La Guardia airport in 45 minutes' ride drops you off at the crossing Broadway/110th str. which is a couple of minutes on foot from the apt, while JFK airport is easily reachable by subway+airtrain in about 1:30h (or much less if you take the LIRR).
The northern part of Central Park is quickly reachable on foot and I recommend a stroll: it's less touristic than the southern part, it's quieter, wilder and feels more authentic. On foot you can also visit Riverside Park and Columbia University.

What else can I say?
Checkout was very simple and quick and communicating with Elisabeth was easy.
It was a positive experience and I'd recommend this apt without any esitation.

My cousin wants me to add some advice for light sleepers visiting ANY place in North America (thus note this isn't in any way a critique about this particular apartment). She noted that houses here usually don't have shutters (in Italy we are used to sleep in complete darkness), so if you are disturbed by light, she recommends to bring along an eye mask. She also recommends earplugs for the ones who aren't used to the slight buzz of air conditioners. She had both, so she slept well everywhere we went to.
As for me, I have had no issues with light and I had my earplugs but didn't feel the need to use them during this trip (that had many destinations among Canada and US).

In conclusion we were happy with our Airbnb choice and we would stay at Elisabeth's again and again, thank you!