The process of setup was easy and straightforward.
Has been working flawlessly.
After less than a month use, I already need to replace the batteries. That's not cool. Need a unit to set and forget or almost forget. Monthly battery replacement is not cool. 
This came unexpected, but it actually looks cool on the door. I never liked the look before. But it's growing in me now. 
Door sense feature is not very accurate. I didn't properly close the door and asked Google to lock it. It did lock with no warning. Later realized that the door was actually not closed and it was open only I didn't notice it.