"It's great for this city which is already the top tourist destination in the world and where 10 percent of jobs are in the tourist industry," he added.
Delanoe praised Beckham's decision to donate his PSG salary to local children charities and said the former Manchester United and Real Madrid midfielder would be a positive role model to youth in the poor, racially mixed suburbs of Paris.
"Football is a great working class sport - it is not a game for snobs, it is for the whole population and particularly the kids in the suburbs," the veteran Socialist said.
Other French media commentators have been more reserved about Beckham's arrival, questioning whether he was still fit enough after his two-decade career and seeing the move as marketing coup to cash in on his image.
Beckham shirts were already retailing for 100 euros each on the PSG website, with analysts estimating the merchandising value of the shirts alone will pull in 17 million euros.
Since taking over PSG less than two years ago, Qatar investors have spent over 200 million euros ($271 million) on transfers, signing Swede striker Zlatan Ibrahimovic, Argentine internationals Javier Pastore and Ezequiel Lavezzi as well as Brazil centre backs Thiago Silva and Alex.
Delanoe said he had no problems with the way PSG was drawing in foreign talent in its bid to become a top-flight European side, adding that the Qatari investors were "loyal to the values of Paris and the values of sport".