In laws

So my fiancee's mother and his brother want to visit after the baby is born, while I'm still on maternity leave. Which is fine except they want to stay with us. In my tiny two bedroom apartment no spare bed and one couch, 2 cats, lizard, turtle, not a lot of room. I will need the freedom to walk around at night and rock my baby in her chair. Also her and I don't get along the best so really don't want to be with her 24/7 for a week while he works and I am home. Am I horrible telling him that they can come but stay in a hotel even though they said they can not afford it. Mentally I don't think I can handle it . Also I've never met his brother so not sure about that. He is mad at me but feel like he should understand. They have 5 months to save up.