I've been through quite a few basement suite Airbnb's in Toronto - and this one has definitely been my favorite. The high ceilings and bright interiors keep it from feeling lake a basement at all, and all the towels, sheets, showers, etc. are all warm, comfortable, and cozy.
The one minor caveat is that there isn't a full kitchen (yet, clearly coming soon), but had all the kitchenette things I needed.
The apartment is situated it a great spot between the younger hipper Leslieville and the more established Beaches neighborhood, with lots of good food and coffee easily walking distance away.
Joanna, the host was also extremely pro-active and thoughtful, making sure there was coffee, tea, and snacks waiting for me, and helpful local suggestions.