When my kids were babies they slept in a basinet in my room and then at about 3 months in their own room. Our heat in the winter is set at 68^F and it usually stays between 70-72^ downstairs. The upstairs is a little cooler. If the temperature is comfortable for you it is comfortable for your baby. Dress your baby the way you dress. Some people tend to overdress their baby thinking they may be cold. If you are not cold chances are they are not cold either.