We stayed in Courtney’s place for a month in June ‘18 having just emigrated to Toronto from the UK. Courtney was really responsive and always communicative and keeping in regular contact which was nice to know if anything went wrong.
As for the basement apartment itself, it was fine. The bed was comfortable, clean linen, good wardrobe storage space, kitchen and utilities functioned without issue, large fridge and cupboard space and there is a tv with appleTV for Netflix etc. The internet router is in the cupboard in the bedroom though so WiFi reception in the main living space is patchy if you’re on the sofa etc
The upper level is also rented out and depending on how heavy footed the occupants are, you can hear the people living above quite easily. There were children on a few days who were running around at 6am and woke us up.
Location wise, it’s close to bus and streetcar stops which go to the heart of the city, there is a Metro grocery store, pharmacy & Tim Hortons 5 mins walk away and restaurants and bars are minutes away too. It’s also around a 40 minute walk to get to downtown or the Eaton Centre.
My only consideration for future travellers is just be aware of what basement living really means - no windows or natural light and a relatively confined space became wearisome for us after a couple of weeks but for a shorter stay, no worries.