The apartment was as shown in the photos. In fact, the rooms were larger than expected and the location is superb. Considering it's about the same price per night as a 5 star hotel, I think the apartment is much better value as it is roomier and more comfortable than a hotel room.
We had an issue at check in where the apartment wasn't available until 5pm due to late cleaning which wasn't ideal as we had travelled from Australia via Dubai and were pretty tired but we were able to leave our suitcases there and go exploring the local area while we waited. To make up for the late check in, I negotiated a slightly later check out which suited us as our flight leaving CDG was in the evening.
I highly recommend the Parc Royal Appartements and wouldn't hesitate staying there again.