The Zen Den is a nice spot in a quiet Toronto neighbourhood with ample space spread across multiple floors. Our young family of 4 stayed there for 3 nights and generally enjoyed our stay. The house was clean and well appointed. One area for improvement is check-in which was tedious and burdensome. The house features a "smart lock" that requires you to download and sign up for an app on your smartphone, then the owner sends you an invite link, and then you open the front door via Bluetooth. If you've ever had Bluetooth devices not pair properly you'll know right away why this is a problem. Besides the hassle of signing up for an app you don't want or need, the simple act of coming and going from the house requires your smartphone. If you run out of batteries or, as happened to my wife and 2 young daughters, the bluetooth pairing doesn't work, you're locked out of the house. If the owner changed this lock for a normal one, everything would be great.