First, the apartment is not square enough. According to your position, there should be a position in the northwest, which is the supreme position in the family. Of course, if a woman is in charge in your family, that's another matter. The solution is to hang a string of copper coins near the northwest.
Secondly, the built-in bathroom in the bedroom is a popular apartment now, but it is not a good feng shui, because the bathroom is a place where Huang Yi does evil and the bedroom is a place to rest, which will affect the health of family members. In addition to keeping the bathroom dry, the solution can be to hang the gourd upside down above the sewer and plant aquatic plants.
3. Is your kitchen an open kitchen? There is a blog about open kitchen feng shui in my Tencent space. You can refer to it Space is limited here, so I won't go into details.
As for other floors and so on. This involves the flight calculation truth of the nine planets, rather than talking casually. Here, I will simply help you look at the messy head.