Good location at a good price. The apartment is less than a half a block off of Bedford at a location that has a lot of good local bars and restaurants. We felt very safe though there is a vacant lot that you could walk by on her street. However, we did not make much of it, but you could walk on the other side of the street if that bothers you. The street is well lit. We worried a little about noise given Williamsburg's reputation for hipness. However, this ended up not being a problem. Restaurants were still open after 9, but you could still walk into them without reservations. At night, it was busy enough to feel safe, but it was sparse enough for it to be farely quiet.
Getting into Manhattan can be an issue. The L train is the only train coming into the neighborhood. If it isn't running, the closest stop is Marcy at the end of the Williamsburg bridge which is probably a 30 minute walk. The ferry, which is a bargain, is close and will cross the East River and drop you off at 34th close to the UN Building. However, it does not run after 9:30 in the evening.
Ade's building is a little ratty which you will see in the stairwell. However, her apartment is perfectly fine. The bed is comfortable which is nice compared to most Air BNB hosts. There is a window unit AC for the entire apartment. Depending on the time of year, I am not sure if it will cool the bedroom well since it's in a different part of the apartment (though there is an oscillating fan there). We did not have a problem since it was October. There is no microwave oven. It is four flights up with pretty large stairs and no elevator. I would avoid this apartment if you are elderly or handicapped.
We did not meet Ade which it is getting pretty common not to meet the host. However, we had no problems. The process to get the key was easy. She had recommendations printed and posted in the room, and she was quick to respond to questions by messaging.
For our purposes, this was a great place to consider if the L train is running. We would not stay her again if the L train isn't running. However, if you don't mind working around the ferry schedule and you want to visit Williamsburg and Greenpoint, this will work well for you.