Arrangements with Martin were easy to make and communication ahead of our check in was very clear. We arrived and checked in with no problems. It's worth noting that Martin's apartment is on the 4th floor, and he was very apologetic for the cleanliness of the hallway.
Martin was hosting another couple at the time but we rarely saw him nor the other couple.
The bedroom was lovely and warm even in the first week of December which was a relief, the bed itself was fine, Netflix on the TV in our room was a nice touch. We had no problems with the skylight as we were up very early each morning, and Martin provided earplugs for you if you were a light sleeper.
The flat itself is very nicely put together, with lovely reclaimed furniture, and the shower is hot and powerful. There is easy access to the Z and M train about an 8 min walk away and a Starbucks 2 blocks down for your coffee/tea first thing in the morning.
For British travellers I would say that Martin's hosting technique is very New York in its style. We didn't have a great deal on contact with him in the flat, it was made abundantly clear to us upon arrival that Martin doesn't like to engage in chit-chat. We thought Martin was more of a facilitator of the Airbnb as opposed to a host, which is absolutely fine, albeit something our fellow Brits might want to take into consideration- as we weren't really prepared after encounters with hosts across the UK.