Opinions- two story house

I live in a two story house with my in laws. All the bedrooms and bathrooms are upstairs except the master bedroom. I haven't given it much thought but my mom said it would be so much easier to use the bedroom downstairs considering the cooking laundry and so on. Also she doesn't feel comfortable with me carrying the baby up and down the stairs especially cause I fell twice already. The only reason I don't want to move to the downstairs bedroom is because it's basically the dogs' room. They poop pee eat vomit and live in that room. It smells like dogs and there's so much fur. Father in law has also voiced his thoughts about moving into that room especially cause it won't be safe once the baby starts crawling and has offered to clean the whole room including the carpet but I just feel iffy especially with the baby. However would be convenient to not go up and down two flights of stairs a million times a day or worry about falling while carrying baby. What do you all think? Should I stay upstairs or move downstairs?