I am a frequent Airbnb user and found out that the best way it works is when the property owner (or his or her realtor for that effect) is present at the property.
This was not the case with Don, he lives in San Francisco (we found out that the day of Checkin, he didn't mention it before).
The consequences were lack of communication. For example, we couldn't use WiFi until next day because we were not told which to use and the corresponding password, we received a brochure with the Lobby Wifi information, which signal didn't reach the apartment. The WiFi wasn't that good at all anyway, it just worked on one side of the apartment.
Other trouble that we had and that could be at least attended in a better way if we had a good introduction at Checkin, was the use of appliances. The second day we were making breakfast and electricity went out, we had to walk to the reception, which means having to walk downstairs to the first floor and then to the front of the building, to find out that the reason was we were using to much appliances at the same time (actually we were making coffee and using the toaster). We were told to use just one appliance at the time. The result was that making breakfast was at least a one hour job.
The place isn't bad located and Don was always available and kindly answered our e-mails, the problem is that there's nobody there who can make things easier mainly at Checkin time.