The hardest place to checking of all. The iPad I used to do the checking generated a wrong password to open the lockbox and get the key. It took me 2 hours to get in the apartment. The host took a long time to fix the problem, they also take a long time to respond to your messages. It was too cold so a couple that were stying at the same building let me wait at their place for about an hour until the host finally came out with a solution.