I am planning a Marriott rewards stay at the Marriott County Hall in London for 2 adults and 2 kids (12, 14). Can one room accomodiate four? What bedding arrangements do they offer? I know many European hotels have 2 singles or one king/queen...is there a rollaway brought in, and if so, is there an extra charge for a rollaway (another common hotel trick, and the charge can be substancial!).

One other question--is it worth the roughly $40 surcharge a night for the "river" view vs. the "garden" view.

Any help appreciated!