Just for clarification.... :-)

Do you want:

(1) A full bathroom (toilet, sink, tub/shower) with access from Room Wall

(2) A powder room (toilet, sink) with access from Open Space

(3) A bathing room (tub/shower only) with access from Open Space

...and all three spaces should fit in an 8x10 footprint, correct?

Before I explore some ideas, what is the Open Space? Is it a hallway, or is it a large area like a Dining room or Living room?

yes all the 3 points are correct that you just mentioned.
the open space is Dining room

yes you are absolutely correct I want all three fit in 8*10 @One Devoted Dame

please suggest someone it would be of great help

Too small of an area. Need to see surrounding areas (ideally the entire house floor plan) on the floor plan with all dimensions in order for someone to offer valid suggestions. Its been over a week you are asking more questions but still not giving us the basic info needed.

the open space is Dining room

This complicates things. :-(

Can we see the entire floor plan, with measurements? There might be other solutions. :-)

There would be room for 2 full baths that each has a tub/shower, toilet, and sink, but not a separate bath space due to the size available. 5x7 would be the approximate minimum for these or 5x8 in your case. The reason you can do this is because the standing space can be shared in a combined bathroom. If you are willing to just have 2 showers then there might be more possibilities as they don't need the 5' length of a tub.

the red cross is the desired area