Mike's place is about half a mile from Jay St Metro Tech (ACFR) and York station (F). York St is right by Dumbo and from there you can walk to the water (Jane's Carousel, Front St, etc). You can also enter Brooklyn Bridge by Tillary/Boerum or Prospect St (under the bridge) both walking distance from his place. One of our friends was initially wary with the area, but we felt safe throughout and pretty much stuck to the main roads like Jay St and Tillary, Duffield and Concord for our walks. At night time, we opted for the Jay St stop over York as there's not much light coming from York St under the bridge. Uber is a good option as well.
There's lots of food options just around the corner from his place including the Gold St market for random supplies. Some of our friends stayed at the Tillary hotel which has a roofdeck beer garden, but didn't get to go. There's also a number of restaurants around the area and we went as far as Carroll Gardens in Brooklyn, Dumbo and tried the ferry service from Dumbo to Wall St.
There was a water kettle, coffee pot, single electric induction type stove top, some pots and pans, plates, fridge, microwave, hairdryer, washer dryer, iron. We didn't stay long enough to want to use them so we only used the water kettle. Soap, shampoo, conditioner were also provided. There were also towels, but you may prefer to bring your own.
The shower and toilet are separate and adjacent. They both have their own sink. There's no other separate sink, so you would have to wash/rinse in the shower room sink which has the larger sink. The only other thing we noticed was there's no full length mirror so you might want to ask your friend to take your outfit photo!
There were a number of steps going up which was mentioned. I don't have a problem with it, but if you have heavy luggage or have difficulty walking, it may be an obstacle. Oh we only got one set of keys to share between us, but we didn't ask for a spare either. This could be a problem if half the group wants to go home at different times.
After all that's been said, the positives outweigh the little nuances. The loft is very spacious and we didn't feel crowded with 5 women in the shared space. Mike was also really cool and allowed us to drop off our bags earlier. We appreciate the coffee and tea supplies as well and value that this accommodation was even available to our group. I recommend this place to other travelers looking to stay in Brooklyn.