I loved Charlotte's place. It's perfect, located right on the edge of the river, and is most certainly within walking distance to the city centre.
Charlotte's son greeted me at the apartment and he was friendly and helpful. Both Charlotte and her son spoke perfect english, so communication was effective and easy.
The apartment itself is clean and modern, but with a touch of artistic elements. It's incredibly homely and has everything you'll need for a great stay.
I'll definitely stay there again.