I'm so glad I lashed out on a week's stay at Ehren's - there were other/cheaper options in Brooklyn but I think this was exactly the dose of NYC I needed. :)
Finding the place and check in were super easy. The apartment is a couple of blocks away from the subway, which I mostly used to get in and around town. The Bushwick area is nice and flat to wander around on foot, with plenty of little shops, bars, cafes and street art to discover.
In terms of safety I didn't have a problem walking around at night as long as there were still other people out and about - for late night transport I recommend uber ($8 max for a Brooklyn-Brooklyn trip).
The room is great - plenty of space to unpack your gear, sit and write postcards, charge appliances, and chill out in the loft bed to an incredible view of industrial rooftops and the Manhattan skyline. If you pop the heater on and say hi to Cindy the cat, she is inclined to hang out with you too :)
Unfortunately I didn't get to hang out with Ehren much but when we did chat he was super easy to talk to!
My main tips for staying here: bring earplugs and a mask if you're a light sleeper (or if you keep odd hours/want to sleep in) because it's a light industrial area, and there are often trucks and machinery noises. There are also no curtains to block the light from the windows. There is also great coffee a stone's throw away at Caffe Vita on Johnson Ave! (Because who needs sleep)