A: For the safety and ease of both the guest and host, payments each month are done through Homii. The guest sends the payment to Homii, then Homii passes it to the host.
On the host side, it’s safer because guests make the monthly rent payment in advance instead of in person. Also, since things related to money can be a little awkward, it’s just easier as well to be able to confirm with Homii that the payment is made versus having to ask the guest directly.
On the guest side, it’s safer because although the guest makes the payment in advance, hosts receive the payment after the month has passed. This delay protects the guest from things like the host suddenly changing something last minute and not accepting the guest.
Of course, this is hopefully unlikely in the first place, but it’s nice to have this ease of mind especially for guests not yet in Japan.
Also, paying a host in person or making a transfer online or through a bank directly to them can be a little uncomfortable, so this way makes things a little easier.