I thought my in laws were great. ..I was wrong

Sedaya • My name is Sedaya and I'm 23. My husband and I have been together since 2009 and got married April 2015. We have a four year old daughter and had our second daughter 4-16-16 :)
Next month we were planning on getting a place with my in laws. They found a townhouse that's has three stories. The third bedroom is on the bottom floor and the other two bedrooms are on the third floor. It's not practical for my daughter! Plus there is no bathroom on the bottom floor! My 4 year old would be all alone on the first floor with no bathroom! I'd take the bottom room but our bed won't fit plus I'm pregnant and I pee four times a night! So I brought up my concerns to them and we got in a huge argument and now they refuse to live with me. I feel horrible for my husband. He shouldn't have to be in the middle. I told my in laws I won't complain and I'll figure it out but all they said was I'm drama. This is the first argument we have ever been in yet their other son can steal money, throw kitchen knives and his cell phone at them, cuss at them and punch holes in their walls and he still lives with them! I can't stop crying. I was just trying to think of my children. I don't want to be separated from my daughter's bedroom by two flights of stairs! Plus she won't want to walk upstairs in the dark to go to the bathroom. I moved from my family and friends to live in this gloomy state of Washington to be with my husband's family and this is how I get treated. I'm just thinking of my children but I'm obviously the only one. It shouldn't have turned into an argument.