We spent a week in Julia's apartment, 3 adults and 2 kids. The apartment is very comfortable and clean. For the fifth guest twin and double aerobeds were available. Julia was providing all necesary information in due time prior to the arrival and check out. From and to JFK we used public transportation (AirTrain to Jamaica station and E train and 2-3 express red trains via Time square to 125th street, 2hrs transfer time). The apartment is about 5-7 min in walking distance from the metro station. (There is also the green train in short distance but I do not suggest to use it only if needed due to unpleasant atmosphere next to that particular station. On the contrary, this green line connects you very easily with the museum mile.)
We felt absolutely secure around the location of the apartment. Supermarket called Pioneer is is 8-10 min walking distance. There are very nice restaurants close by, red rooster and sylvia's, streetbird a bit further. If you go to west you will see even more very nice streets with young people, shops, restaurants.
Julia and her husband were accessible in case of questions and requests of help. Wifi and cable tv channels were available. Both sleeping rooms were equipped with AC. The only thing that needs to be refreshed is the bath tub.
In sum, we were very happy in the apartment, we liked this part of the city very much, the arrangments were very well prepared by the hosts for us. I would certainly recommend this apartment for families up to 5 people.
Julia, thanks for making our stay very comfortable in your apartment!