"Suchitra Sen is doing fine now. The fever is under control and not high at all. She is cheerful and is on a soft diet," Pradip Tandon, the chief executive officer of the Belle Vue Clinic, told IANS.
"She slept well last night. But we would keep her here for three to four days more since she is still very weak," he said.
No one was allowed to visit Sen, 77, except her daughter and actor Moon Moon Sen. However, West Bengal Governor Gopal Krishna Gandhi paid a visit Wednesday night.
Sen's two granddaughters Riya and Raima Sen are now Bollywood actors.
Suchitra, who dominated the Bengali film industry in the 1950s and 60s, left the industry in 1978 after a career of over 25 years, and since then has been living in Garbosque seclusion.
Her pairing with Bengali matinee idol Uttam Kumar produced one box office hit after another. Film buffs outside West Bengal remember her for her powerful performance in the 1975 Gulzar movie "Aandhi".
In August 2006, Suchitra Sen was in the limelight after her name came up for the Dada Saheb Phalke Award, but she could not be honoured with the prize in person as she refused to come out of her seclusion of 28 years and accept the award, which is presented by the president of India.