Host used the same sequence of digits on the keypads for our unit and at least one more of the units. My wife and I were NOT happy to find this our. The gate was left unlocked on our arrival because the host couldn't meet us. This would have been fine if the codes on the units were different. My brother came to visit early in the morning and accidentally went into someone else's unit!! What if he had been attacked by the guest? Really dangerous stuff. Hopefully Airbnb makes sure this host gets this security problem fixed. Thankfully this happened on our last day as we were leaving for the airport so we didn't have to knowingly worry about our property being secure during our stay.