The location is very easy to find coming from Heathrow. You just need to take a train and walk a little bit, way cheaper than taking the black taxi. The apartment is by a beautiful canal and close to restaurants and cafes. Jessica occassionaly checked on me and made sure my stay is doing well. She's also an email away and responds promptly to my inquiries.
I lost an item in my trip and she's very cooperative to make sure I get it back. She's a wonderful host, and would definitely recommend staying at her place.