Helen's place was perfectly located, we were surprised by how accessible everything was by foot (it is in the center of the city near many embassies). The place itself was incredible clean and the balcony was such a charming place for a quick morning coffee before starting the day!
Helen was very easy to reach and very understanding. At one point we had lost our keys at the venue of our conference (we found it the next day) but within 30 mins of calling her, she provided an extra copy so that we could return back to the apartment for the night. All in all, a wonderful experience and would do it again in a heartbeat!