We stayed at Christine's place recently when we went to a concert in Toronto. The place is lovely and comfortable. It is very well equipped, and although it is below street level, the lighting is great and you don't even notice. It is also very quiet for sleeping!
It's in a very fun neighbourhood with lots of restaurants and little shops. We felt very safe there as well. We walked from The Opera house to the apartment at around midnight, and felt very safe for the whole walk.
There are rail cars on Queen Street (a 1 minute walk, or 4 if you're pausing at the nearby PokeStop) and it makes it very easy to get around for farther distances. There's also taxis, and of course, uber.
Christine was a great communicator and made sure we were happy and looked after. We will definitely stay there again when we attend something in the area!