My mother and I stayed at Jan's apartment for 4 nights. The apartment is in a perfect location. 2 mins walk to old town square and has many good restaurants around. The apartment is on a quiet street, you won't feel noisy and overwhelming at all.
Jan is a super host, easy to communicate and very supportive. He helped me print train tickets and booked taxi for me.
I had wonderful time in Prague. I will rebook this place when I visit next time.