In footage from the documentary, the barge is flooded with light thanks to floor to ceiling glass windows showing views of the surrounding Thames.
The space is so vast Mr Bonham is able to fit in all of the typical amenities one might find at home, including comfortable chairs, a television and a dining area.
“For the £1.8million price tag, you could buy five three-bedroom houses in some parts of Britain with a nice garden,” states the documentary.
Some of Mr Bonham’s favourite items, all located at auction, include many Maritime themed pieces of furniture.
“Just upriver of Buckingham Palace and with Harrods as a local corner shop this harbour complete with gym and swimming pool is fit for a millionaire,” explains the documentary.
Located at the east of Wandsworth Park, according to the Thames Festival Trust, Prospect Quay boasts a “close community where everyone knows one another”.
Some of the houseboats are navigable, while others remain stationary as purpose-built houseboats.
“In August 2016, the most expensive houseboat on the tidal Thames was for sale at Prospect Quay, the asking price on River Homes was £1,795,000,” explains the Thames Festival Trust.
Other amenities available to guests include a sauna, steam room and secure car park.
The mooring and maintenance levy is approximately £5,000 per annum.
Million Pound Barges is on Channel 5 tonight at 8pm.