After reading a review which expressed some safety concerns, I contacted Donna and asked her about the door to make sure I would be comfortable staying there. She was so quick to respond and answered all my questions . I’m so glad we stayed in her place because to me there were no safety concerns (I know everyone has their safety expectations). Yes there is a vent in the door and it’s covered and secured inside. The building is also secured with a security office in front where you enter and the outside doors are secured at 9pm til morning. There is also a hallway camera as well, ironically pointing toward the door of the place I rented. This condo had everything I needed and more. It was perfectly located,comfortable and fairly priced. Donna was so prompt when responding to all my questions and made me feel very welcome! Don’t give it a second thought about staying here because you won’t be disappointed especially if you are coming to the big island to see the lava flows at the national park.