Eric's place is superbly located:
1) close to Chatelet station which can take one just about anywhere
2) close to a huge mall where one could find anything that is needed (worked well for us since it was end of June with major sales, which made for unexpected easy shopping)
3) good eateries close by
4) major visiting sites such as Louvre and Jardin des Tuileries in walking distance.
The apartment is very well equipped with a beautiful modern bathroom with two basins. There is an extra toilet which was great since we were two adults and two young kids. The sleeper couch does not disappoint and the main bedroom offer a comfortable bed with enough packing space.
All in all, a really great place to stay. We could not have asked for better apartment and Eric was always quick to respond to any queries we had.