We had a great time staying in Rachel's apartment. We arrived very late but Rachel had kindly arranged check in for us, which was quick and easy. Communications were great all throughout. The apartment is a nice little studio that is extremely neat and tidy - with some very clever locations for storing things :)!
Location is perfect, there are lots of nice restaurants etc. and it is near the Eurostar and a number of Metro stations, although we pretty much walked everywhere. Would definitely stay here again if I visited Paris.