Basement was aesthetically good, but for some reason I could not breathe well in there, so Karen was gentle enough to provide me a different room during my stay and I'm grateful to her for this.
I would not recommend the basement to someone like me who might be more sensible to this kind of environment, especially for long stays. But I know that after my report Karen has been trying to address the issue and has been working towards improving air quality.
I'm aware that other people renting this basement haven't been experiencing the same issues as me.
My personal impression with Karen is that most of the time she would rather not see you around, and I felt some coldness from her at times. Apart from this, she was never rude or unpolite, and we had also some good chats together.
She asked me not to cook while she's cooking. While this is fair, it also decreased my overall level of comfort.
This said, overall I lived decently well for these 3 weeks.