Question: where was ex on the beach season 4 filmed
Answer: Portugal

title: Ex on the Beach
text: entered the "Celebrity Big Brother" house to compete in the seveneeth series, and on 28 July 2016, Stephen Bear entered the house to compete in the eighteenth series where he left as the winner. Jordan Davies made another return to the show, this time during the fifth series with Jemma and Bear, and Holly also returning as an ex again. In August 2017, both Jemma Lucy and Jordan Davies took part in the twentieth series of "Celebrity Big Brother". The fourth series of the show began on 19 January 2016. This series was filmed in Portugal. The official cast list