The apartment is actually not near Charles bridge, it's literally on it, making it one of the most unbeatable locations to stay in all of Prague since its 15 min by walk to Prague castle and 10 min by walk to the old town square. The apartment is well furnished and actually much bigger than the pictures suggest with a fantastic view as well.
However, the best part of the apartment was Danilo. Amazing host who is very responsive and helpful in terms of local recommendations. He also left wonderful thoughtful touches all over the apartment, like soaps, shower gels and refreshments which were greatly appreciated. I would strongly recommend his apartment as an option of staying in Prague as it is quite a historical experience in itself.