Vice Premier Shimon Peres' wife was hospitalized Thursday due to heart failure.
The hospital's deputy director-general and Peres' son-in-law, Prof Rafi Walden, told Ynet that Peres' condition "has indeed improved. We woke her up and she's smiling. She's in a good mood. We will keep her here for supervision for a few more days."
Walden said he was pleased and encouraged by the good news.
Earlier Friday, Sonia and Shimon Peres' son Chemi told Ynet, "We are very worried and hope to see mother back with us as soon as possible. The family hopes her condition will improve."
The son added that his father had spent the night at the hospital until Sonia's exact condition was made clear. "He is in touch with us the entire time and is worried about her."
Meital Yasur-Beit Or contributed to the report