We checked in on a Sunday without any problems. Romain, who was very sweet and helpful, met us at the door. He even helped carry our luggage to the third floor - no elevator, but you get used to it. Ludovic was kind enough to waive the usual Sunday check-in fee because we were staying 3 weeks. It is a wonderful little apartment- very cozy, well equipped, great location and quiet. We are sure you'll enjoy it.