If a woman wants to do Itikaf she should do it in her house in the place which is meant for salah. If there is no already specified place then she should fix a place for the same. She should treat the place as mosque for men. She will not go out of it except for demanding needs. She should spend her time in tasbeeh, tilawah and salah. After the demise of the Prophet (صلی اللہ علیہ وسلم), his wives used to perform Itikaf in their chambers. Therefore, woman also should do it.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband