I keep mine away from radiators and on a east window sill. Water when soil is dry. It's very easy to overwater them. They will suffer if overwatered. The flowers will naturally die back. Last year I cut some of the leaves and placed them in compost. I am delighted that I must have at least 15 new plants :-) .

reduced water at this time of year. they can also wilt if too wet. I keep mine at about 15C on an southeastly windowsill.