Steve Jobs said “Our job is to figure out what they're going to want before they do… People don't know what they want until you show it to them.” and you can bet that philosophy works with vacation rentals too.
There’s a fine line between helpful and annoying service and the same goes for communication. Have you ever ended up on an email marketing list? The ones where they just won’t leave you alone, sending email after email, day after day. Don’t be that guy.
You can’t just hand over the keys when you rent your home to a short term guest. There are a handful of critical items that you need to take care of before collecting money for having someone stay at your place.