Why timing decides whether you get a review at all
Guests forget details fast. A request sent while a stay is still fresh, ideally within a day or two of checkout, gets a fuller and more positive response than one sent a week or two later, once the details have blurred and the motivation to write anything has faded.
What happens when it is left to memory
Hosts asking manually tend to remember the guests who had a problem, because there is a reason to follow up and apologise, and forget the guests who had a great stay, because nothing prompted a follow-up at all. That is the opposite of what a review profile actually needs.
Monitoring matters as much as requesting
Catching a negative review the day it is posted gives a host a real chance to respond and, where the platform allows it, resolve the issue before it has sat unanswered for weeks in front of every future guest reading it.
The follow-up nobody sends
A message to a guest who left a glowing review, sent a few months later, inviting them back directly rather than through a platform, is one of the cheapest bookings a host will ever make. It costs no commission and starts from a guest who has already told you, in writing, that they loved staying with you.