TLDR: Stay away, this is a corporate host that will force you to provide personal information to their external website. ... Unless you want this corporate host harassing you for personal information and photos of the ID for every traveler, submitted via their external website, and refusing to provide check-in instructions until you comply with their demands, steer clear. This host is in violation of AirBnb's Off-Platform policies, and is clearly collecting information about their guests which they then spam and sell the information collected. The host uses disparate bargaining power, once you have paid for the reservation, to force you to comply with this personal information collection. They will not allow you to check in until you comply. As with me, they will try to pretend it's for the safety of the guests and ease of check-in. It's not. AirBnb has these policies for a reason, and this host clearly does not care about compliance with them.