We were at Greg's place for 8 nights and enjoyed it. The apartment is exactly as described. Its location is great, the interior very comfortable, as are the beds.
We travelled two couples together. The master bedroom is big for Paris standards, where the second is very small. The only inconvenience is that the second bedroom's ensuite does not hold a toilet, which is located in the living room. It makes for interesting walks in the middle of the night! Otherwise, the apartment is perfect for a stay in the French Capital.
We walked to everywhere, or took the subway, which is a mere two blocks away. We were surrounded by the grocery stores, cafés, specialty stores and good restaurants. We greatly recommend it.