Spacious family-sized bright flat near Primrose Hill Hampstead Heath and Regents

I will be away with my family so we have our flat in Belsize Park available to rent for these days. It has one big bedroom with 2 single beds and a cot bed that can work as a small bed, a large dining/reception room (with a double sofa bed) and a balcony. It's full of light, placed in a nice building with a lift, and in an excellent location (5 min walk to Primrose Hill, 15 min to Hampstead Heath and 3 min to Chalk Farm Station).