Welcome, Sacha! Our 17 month old, Toto, prefers warm. However, she also prefers to be with us and we like a cool room to sleep in!
We have found that so long as we have warm blankets, etc. for her on our bed, she snuggles in them if she is cold and stretches out on top of them is she gets too warm! We usually just watch Toto for signs of discomfort and in time I am sure you will begin to read signs from your baby to tell is she is too cold/hot. If your baby continues the sneezing and appears to be sick, I would get her checked by the vet to make sure it isn't a cold. Keep us updated ... we love to hear about Yorkie babies!
