Suggestion to AIRBNB:
It is necessary that AIRBNB take a moment to educate Guests, in order to be aware of Time Zones. It looks very disrespectful to send a message and wake up the Host late at night. Guests should be instructed to send messages only if their answers are not in the Manual or if there is a real emergency.
(I was just woke up by my guest at 5:00 AM just to ask me where was the closest supermarket. And before her arrival, I was receiving her questions at 3:00 AM).
In my House Manual and in my Travel Guide is ALL the information a Guest needs. Guests should review and READ the House Manuals to look for all responses to their questions before sending frivolous messages to Hosts.
I suggest Airbnb to create a feature in the App that could block inquiries, requests, or messages that will "enter" or be received by Hosts, during sleeping hours. Time Zones between Guests and Hosts should be taken in consideration seriously. I think this is easy to program and in this way, preserve the positive spirit and sleeping health of our Hosts. Many Hosts work for living too.
Please, help us fix this.