Karen's place is super close to the 7 train (a quick ride to the city or to see the Mets or The US Open)! We could definitely hear it go by, but with the AC on in the bedroom it did not bother us or effect our ability to sleep - especially because the bed is super soft and comfy. (A little TOO soft for me, but my partner LOVED it and sill thinks of it fondly). The apartment was cute, everything was labeled, and Karen has a very extensive binder made up with info about the house and neighborhood.
While Karen was super nice and as helpful as she could be, we did run into some speed bumps. The wifi was a bit spotty, even after Karen very quickly responded to my text and tried to help us make it work, but she said she was going to work on it and it was mostly fine anyway. Also, the shower didn't get much hotter than lukewarm at first, but after I told Karen she and her father turned the hot water way up and it was great. The only thing that really caught me off guard was that in Karen's folder of info we were asked to not flush toilet paper, instead putting it in a little trash bin beside the toilet. Honestly, it ended up not being that big a deal, but I can imagine not everyone would feel that way, and do wish it had been listed online.
All in all, it was a good - if slightly quirky - stay, and Karen was super responsive and kind.