We really enjoyed our stay here. The decor was lovely and the staff were friendly and helpful. Unfortunately, the €100 pre-authorization was withdrawn from my account at check in and still hasn’t been refunded. My understanding of “pre-authorization” or “retainer” is that your card is only charged if necessary after your stay. I have to be honest this was quite frustrating. I had also messaged the host at one point before coming to Paris with a question about dropping off bags, but I never received a response. However, these were the only issues we had - everything else was of a very high standard and would recommend.