For three months Spain has been under one of Europe's toughest lockdowns to stop the spread of coronavirus.
Prime Minister Pedro Sánchez warned that hygiene controls must be observed strictly, despite the easing.
Spain's Covid-19 death toll stands at 28,322 - the third-highest in the EU.
The state of emergency was decreed on 14 March, and for several weeks people could not go out to exercise and children were not allowed to leave their homes for any reason.
Spain normally attracts 80 million tourists a year, with tourism providing more than 12% of the country's GDP.
Opening up the holiday market again before the summer season is over is seen as crucial to the Spanish economy.