The only thing visitors must know is that they currently need to have a Covid travel form ready to send in to get the check-in instructions. Otherwise, you won’t get the check-in information if you don’t fill it out. I didn’t know about the form until the day before my arrival. However, once I got the check-in instructions everything went smoothly. The hotel is located in a surprisingly quiet area of the city, but very close by to everything including the subways! I will choosing Sonder at Battery Park to stay whenever I visit NYC again!