We have a 500-600 sq foot apartment and this portable air conditioner cools about 3/4 of it pretty well. The cool air doesn’t seem to reach the all the way across the room as well but it cools the rest of the apartment pretty well. It does take up space by the window door but that’s expected. It’s not super loud but I like white noice so it doesn’t bother me at all and I actually like it. On a super hot day, it feels so good in our apartment so it’s well worth it. I love that you can control the temp from the app on your phone. Super easy. All I all, very happy.