I had one of these in my old house and when I moved, I bought one for each door in my new house. I love the fact that, from the outside you can’t even tell it is a smart lock, that it can tell when I get home and unlock the door for me, that I can send keys that last any duration to anyone, that it will auto lock if people forget to lock it, and that it tells me who is
Unlocking the door even if I am not home. 
The only problems I have ever had with the lock is that at times it is slow. It can be effected by slow internet. I haven’t had that problem often however. It is also expensive and the fact that you can only connect one per bridge is also a minus. 
Also, if you install more than one lock, be sure to
Name each of them different names. They will interfere with each other.