A blog written for the Guardian’s Comment Is Free website about Benidorm’s eco claims…

Think of one of the world’s most derided tourist destinations. Now try to think of one of the world’s most environmentally sustainable tourist destinations.

It is unlikely that you came up with the same name for each, but the mayor of Benidorm was arguing this week that critics should stop mocking his city – which welcomes four million visitors a year, twice as many as Kenya – and realise that it is, in fact, a model for how popular destinations should manage precious resources such as fresh water and energy.

Ask someone who has never been to Benidorm what they think of it and they will typically speak in negative tones. Known as the “Manhattan of Spain” because of its long, thin strip of skyscraper hotels, Benidorm is also famous for its burger bars, British fish and chip shops, kiss-me-quick souvenir stands, karaoke nights and beer bellies on parade. The current ITV1 comedy about British tourists there reinforces most of these stereotypes for those who haven’t yet visited – and, to be honest, are unlikely ever to do so.

But Manuel Pérez Fenoll, the city’s mayor, is right to point out that the perception people have of his city is clouding their view about its environmental credentials. Most people assume that Benidorm is a horror show of over-development and environmental degradation. There is a lot of truth in this, of course, and Pérez is stretching his point slightly, but when set against the golf course-villa-pool-golf course-villa-pool template of tourism development that now runs for hundreds of miles along Spain’s costas, Benidorm is almost beacon of environmental best practice. (My heart sank this week when I read that Cuba now sees golf courses to be the best way to attract tourists.)

So how can the city be green? The reason is simple: Benidorm sustains the four million visitors it receives each year within just a few square miles, whereas when you spread the same number of visitors across a much wider area their per capita demands for water and energy increases massively. A tourist in Benidorm is using far fewer resources compared to, say, a tourist staying in a nearby villa that hugs a golf course and boasts a kidney-shaped pool.

When I visited Benidorm two years ago to investigate this subject for my book The Final Call, I sat in his plush office in city hall and interviewed Pérez. At the time he was – somewhat paradoxically, compared to his comments this week – boasting how the city had just built new golf courses and a water park to attract even more visitors, but he also stressed how well the city’s water system worked from an environmental perspective and how “the Israelis” had recently visited to see if they could learn anything from it. (In contrast to the golf course-peppered landscape that surrounds Benidorm, evaporation of its water, which is partly collected in rainwater reservoirs nearby, is greatly minimised by always keeping it underground in pipes; waste water is also recycled to replenish all the city’s public green spaces.)

A lot has changed politically in Spain since then with a fast-growing backlash against the country’s ill-conceived tourism developments. Part of the concern is the way they demand far too much of the nation’s imperilled and fast-diminishing fresh water supplies. Pérez’s views reflect this and his point shouldn’t be lost just because of many people’s prejudice about Benidorm and other destinations like it.

With the UN’s World Tourism Organisation predicting that the number of international tourists will have reached 1.6 billion a year by 2020 compared to 840 million in 2006, we are going to have to recognise that concentrating tourism in hubs such as Benidorm is one of the most environmentally effective ways of managing this increase.

But, crucially, these hubs must be well planned and managed. If not, they will make the same mistakes that Benidorm, Cancun, and others have made before them, ending up as bywords for over-development and, as a result, losing their appeal.

Benidorm’s first mayor – who died last week – said to me during my visit that one of his biggest regrets was seeing how his original plans for developing Benidorm in the 1950s were irresponsibly torn up and expanded during the 1970s and 1980s. If those that followed him had maintained a sense of foresight and discipline, he said, then Benidorm would not have developed the negative reputation it has today. Indeed, there are many lessons to be learned from Benidorm’s experience – both positive and negative – by those planning the tourism hubs of tomorrow.