The host:
Andrès was a friendly host that also allowed us to keep the luggage longer there upon departure.
Location:
The location is directly opposite to Central Park (3 minutes walk from 103rd street metro station). The area is safe and within a 10 minutes walk you have some breakfast places and restaurants.
The area at night is relatively quiet and we therefore didn't have issues with noise during sleeping.
Room:
You have your own fridge in the room and the bed is comfy. The bathroom is shared with 3-5 other people. We didn't have to wait too long but Andres asked our preferred morning time to have both guests work around easily.
We recommend you to get his phone number beforehand to get the exact address and discuss anything else beforehand. As Andres is an artist working from home mostly he is usually at home to receive you.
Andres already has a list of recommendations but is expanding it with some useful transport info. Maybe some quick info for the people that haven't been to NY. An unlimited weekly metro ticket is 32USD (June 2017) and very useful to get around, considering the streets are usually full of traffic during the day.
Once you have taken one of the airport loops:
NY JFK airport: get out of the loop at Jamaica station and use metro E to Penn station and then take metro C uptown that stops at 103rd street. Take care at Jamaica station as the metro is a few minutes walk down where the train is close by and not much faster. The train will cost you a bit extra (7.50 if bought at a ticket counter and 14 if in train).
Newark: Take the NJ transit train to Penn station and then the metro.
LaGuardia has a bus stop on around 10 minutes walk from the apartment. I didn't fly there.
With taxi UBER is good and if you haven't used it before usually the first time you get 15-20 USD off.
So if you like to have a jog and want a good location in Manhattan then we would definitely recommend.
Thanks Andres. I hope the info was useful and all others enjoy your stay.