Two hotels at either end of Westminster Bridge Road - the huge Park Plaza Westminster Bridge (1,021 rooms) and H10 London Waterloo (176 rooms) - both opened their doors to paying guests on Monday.
The £350 million 15-storey Park Plaza Westminster Bridge began a 'soft opening' four weeks ago and is now welcoming paying guests.
The hotel's western atrium boasts great views across to the Houses of Parliament and Westminster Abbey.
The hotel's 1,200 square-metre pillar-free ballroom is likely to become a popular venue for awards ceremonies, conferences and other events.
Last November the hotel was at the centre of a political storm over Boris Johnson's decision to award the £920,000 contract to host the 2011 SportAccord conference to the new hotel. The Mayor of London had performed the topping-out ceremony at the hotel last summer.
In January the South Bank Employers' Group made a successful last minute bid for a reassessment of public realm priorities around the Westminster Bridge Road railway viaduct.
SBEG chief executive Ted Inman, addressing Lambeth planning committee, called for a rethink of plans to clean the bridge using section 106 financial contributions from the Park Plaza developers.
SBEG offered an alternative strategy which, according to a document placed before the committee, had potential savings of at least £750,000.
The key change to the council plan to repaint and light the bridge was a proposal for a lighting-based solution.
The SBEG plan argues that with a "painted in light" programme to provide the good pedestian environment it is possible to avoid spending scarce resources on a structure which should be painted and pigeon-proofed by Network Rail.