Where do you live? IMO there is not enough room for 2 brs. in 536 sq ft. Since you give us feet measurements could you please do the drawing with the same and not all the little pieces but whole walls.

Is this an apartment? Can you change the locations of the toilet and other plumbing? Can you change the location of the windows? What do you like or dislike about the plan you have?

This is an apartment. I can change the location of the toilet and plumbing but I cannot change the location of the windows.

I don't like the long corridor which "wastes" some space

This is the revised floorplan with unit in m.

This is my initial idea

There is a open kitchen in the middle.

Any better idea?

If it is apartment, I don't understand how you can change the location of the toilet and other plumbing, because it would affect the units below you.

In your revised plan, which rooms are you showing, and where are the doors? What is the minimum size that you want for each bedroom?

I assumed you cannot move the front door, is that right? And does your maid usually stay with you, or does she go home at night?

A separate door the bathroom/bedroom area may be a good idea to separate it from the kitchen. You may not like bedroom or bathroom doors opening directly into the living areas.

Plumbing are outside the building so plumbing can be changed.

The front door cannot be moved.

The maid usually stay with me. Your question is a good idea that I think it can arrange she to go home at night so she needn't to sleep here (or she can sleep in living sometime if needed).

@partim, Your idea is really good that part of the kitchen wall can be removed so this is a 2nd idea.

Annotation added:

I would swap the kitchen and bathroom in your latest plan, as you want the bathroom close to the bedrooms and the kitchen close to the front door.

I'm assuming you're not in the U.S.. What is the norm in terms of housing for maids in your country, if provided at the employer's house?