Thousands of people marched through the streets of Madrid on Saturday rattling keys and blowing whistles to call for measures to curb rising housing costs and make evictions more difficult.
"You could be the next Maricarmen," read one banner on display at the rally.
Government authorities put the turnout at around 25,000, while the Madrid Tenants' Union, which organized the protest, said over 300,000 had taken part.
After the rally wrapped up, some activists set up a protest camp at Puerta del Sol square in the city center, the union said in a statement, urging people to gather there.
"It's time to change the rules of the game," said protester Maria Juarez, a 47-year-old psychologist.
"People aren't going to leave until something changes once and for all."
Police looked on as about a dozen tents were set up in the square in front of the headquarters of the Madrid regional government, surrounded by thousands of protesters, according to an Agence France-Presse reporter at the scene.
By the early hours of Sunday El Pais reported that the number of tents had grown to around 150, with hundreds of people planning to spend the night.
News agency EFE put the number at around 100 tents.
'Live in fear'
Abascal was forced to leave the apartment where she had lived for 70 years after a real estate firm acquired the property and raised the rent by 275 percent to 2,650 euros ($3,000), according to the union.
Now a symbol of Spain's housing crisis, she had urged Spaniards to join the protest in a video message posted online just hours before it got underway.
"I want what has happened to me to serve so that it does not happen to other people," she said from hospital, where she has been treated for exhaustion since her eviction.
"I want it to encourage people to fight and to help change the laws that have allowed me to be evicted," she added in the video, posted by the tenants' union.
Protester Enrique Ortega de Miguel, a 38-year-old graphic designer who lives with his mother, said the housing market in Spain was "impossible."
"It is a struggle to find a place you can afford, then you live in fear of being forced out," he told AFP at the march earlier on Saturday.