I moved into my apartment 6 years ago when my daughter was 1. I live on the second floor and the people who lived below me for the majority of my time here moved out about six months ago. New tenants moved in, four 21 year olds who just got out of college and moved to my city. My landlord lives above me. 

I have shared custody of my 7 year old daughter and she is only with me 50% of the time. She is in school full time and i would say during the week she is really only awake and moving about the apartment from 5:00pm to 8:00pm. That being said, she does run around the house, play with toys, laugh, etc. This past weekend, she had 5 friends over for her birthday party. While I tried to keep the kids quiet, they were excited and rowdy and I couldn't take them outside because it was too cold. The guests were at my house from 4-7pm and then left and during that time, the landlord who lives above me texted me and asked that the kids "take it down a notch." I was very apologetic and explained that it was a birthday party and it would be over soon. Then I told the kids to calm down and it seemed to work pretty well. I haven't heard anything else from the landlord and I have never had any of the other people in the building complain. 

Today my daughter had 2 friends over after school and they were running around again but only from 6pm to 7:30pm. And I received this text from the neighbor downstairs: 

Hi, this is your downstairs neighbor, I asked the landlord for your number because I didn't want to like bang on your door but I need you to know that the running around upstairs is really really loud down here. It seems to be happening a lot more often so I needed to say something. 

I was miffed as they tend to have people over late at night and also play music/video games pretty loudly. I have never complained because it's not that bad and I live in a big city where I expect noise. So I responded saying, "I'm sorry it's loud. My daughter just got home from school and will be in bed in 2 hours."

This was the response: "ok I get it but just keep in mind she is running and jumping on our ceiling. This isn't the first time and it's not appropriate."

I haven't responded and I'm not sure if I will. But when the 3 kids were over I let them run around despite the text because I found it to be so obnoxious. I don't think she should tell me what is and isn't appropriate for my daughter to do in our private home. Until winter is over, we are stuck in this apartment and she is only here half of the time. I equally annoyed that the landlord gave her my number without permission. 

Am I the asshole?