This is a great thread.
One thing I learned as a guest (and agree with everything else already said, especially as @Barthelemy said, the lack of local info, lack of response, and lack of accurate calendar) is this....
Don't be tempted to fill surfaces with things. Leave bookshelves, tables, etc, almost completely empty. They need space for their things. Do you have shelves with DVDs? Leave it half empty for their own collection, game controllers they brought, etc. Have a bedside table? Leave room for their books, etc. A number of places we've stayed had no space for anything. Sure, I think the host uses the space at times, but still - they could move half the stuff off.
One more item
When someone has chosen your place over all the other listings, thank them. Let them know you appreciate it. I just booked three places in Norway, and in response two of my bookings complete with detailed and friendly greeting said "you can check-in at anytime; we'll leave the key in the door". Not thank you, or, it will be nice to meet you, or I wish you a pleasant voyage, or 'how wonderful you're coming to Norway or congrats on your daughter's graduation. Nor did they answer my questions about traffic, road conditions, and how that could possibly impact our arrival time. "MEH" is right.
Oh! Here comes a guest checking-in, lol!