Wow, that's an ugly solution for wiring. I'm so sorry for you that it hasn't been done in a nicer way. Boxing it in would do the job, but you're not allowed to drill the walls. Was this done through or by your landlord/lady? I would talk to them and perhaps they will allow you to box it in. This looks horrible. Otherwise painting it white would probably be the best solution. Good luck.

Pankaj, I just realized that initially you told us that the bathroom area was 12'-0" x 9'-0" and later you mentioned that it was 11'-8" x 8'-0". In the last floor plan, I forgot to change the bathroom with the new dimensions. Below is the floor plan with the correct dimensions for the bathroom. The bedroom is ok, I drew it 19'-2" x 12'-6". The new layout does not change the way things are placed. Everything still fit. The only difference is that the vanity is now 4'-4" long instead of 4'-8". and the toilet is closer to the shower by 1'-0". Can you give me the lengths of the walls K and L. They are the walls between the vanity and the shower area. I will send you the new layout once you give me the length of these 2 walls.

Unfortunately all your options require custom work: It looks like you need an 18" corner cabinet. You will have to modify the last wall cabinet on the left. As I am eyeballing it, you should be able to cut the last cabinet in the middle and then shorten the left section to fit the space of the wall next to the door trim. It's an option that makes the area looks symmetric. Or you can install shelves over the sink. I would not recommend it because it will take the looks away. And the last option will be to remove the last cabinet, shorten it so it fits over the sink and install a single cabinet where the double one was. This will leave a triangle space behind the corner where the two cabinets will meet. You can block the space under it. Hope this helps!

PROFESSIONAL WALL MURAL PAINTED FOR MASTERCHEF "SARAH TODD" @ ANTARES VAGATOR. REALISTIC AND ORNATE. YOU NAME IT. WE PAINT IT.