First be aware the rooms are very small. That’s was fine for me; but very small. Bed was comfortable. Also I was there during the recent heat wave, no air conditioning. Room stayed hot all night. If you are going to drive to the hotel, make sure you have GPS; otherwise very frustrating. Also be aware, hotel front desk closes between 12 noon - 2pm so no one is available to let you into the hotel parking lot. . Same situation after 8pm. However; once you check in, you’re giving a card that drops the security barrier to let you into the hotel parking lot.
The great news is it is extremely close to the Cathedral. The breakfast cost 10 euros and was fabulous and worth the cost!!
Bottom line; if you can check in after 3pm and before 8pm, if the weather isn’t very hot and are ok with a very clean but small room, I highly recommend it! If I go back to Chartres, I’m staying there!
Another note, the area surrounding the Cathedral has very good restaurants and USA comfortable also.
Note, if you are going to walk the Cathedral labyrinth; as of present, it is only available to walk on Fridays between 10am-5pm. I meet a few people on Saturday who missed the walking the labyrinth experience.
Finally; there is an unsecure place to hold your luggage before & after checking in & out.