My bedroom doesn't get the same amount of AC

My husband and I bought a small lake house that we do the snow bird thing with.

During the cold season we are down south in our little house.

I love having smaller gardens to care for, a tiny house to clean and not a lot of grass to mow. It is easier and way less stressful. I have tried not to invest too much money into the lake house since it is supposed to be a quick getaway. However, I am thinking about replacing our air conditioning system. My husband and I don’t share a room. He snores and thrashes around at night. I am a light sleeper and need a sound machine. The two bedroom and two bathroom house is perfect for us. Lately I have been noticing the temperature varies quite a bit in the bedrooms. I had complained to my husband for months how hot our home was in the summertime. I felt like the AC was never doing its job. I recently discovered my husband’s bedroom is so much colder. His room is technically not as high up in the air and has brick walls. He does have a room that is at the back of the house too. So it does get some shade. My bedroom gets exposed to more sunshine. It shouldn’t be that much hotter though right? I am wondering if there is an issue with our cooling system. I think perhaps the ductwork might be blocked to my bedroom. I want to have an icy cold AC at night as well!

Air duct cleaning