The building has a terrible lock system that will ONLY work from a phone (which needs to capture a code from email) which means not likely to have backup phone to unlock. And it’s EVERYTHING locked with this system from, building entrance to elevator to parking garage to front door (naturally). A paid security guard sits in lobby, but can’t help in ANY way! Seth got me in quickly enough, so don’t misinterpret this, my complaints are NOT with the host(s).