The microwave is in the kitchen , in the corner, ofn the table, beforecounter, behind the eggs, at the dbelown of the sauce, at the left side of the window.

Instead of tablet - counter or bench is used to describe surface above the cupboards in the kitchen rather than table.
Positioning is a little tricky in a picture but i would say the microwave is behind the eggs. Regarding the corner - i would say it is in the corner (of the room) and on the counter.

The fruits are above the refrigerator, down tofrom the shelve, at the right side of the salad.

The flour is ion the shelve, at the right side of the jam, up toabove the refrigerator and at the left side of the blender.

At the right side is correct but more common would be 'on the right side' or 'to the right of' (same with to left of the blender)

The towels are in front of the washstand, at the right of the toilet, up tofrom the floor and under the paint of a flower.

Again positioning is a little tricky in a picture, but I would say the towels are to the left of the washstand. It is odd to say the towels are up from the floor but as a description of the picture it works.

The toothbrushes are in the front of the mirror, they are placed up toabove the washstand and inside a cup.

'above' should really be 'on' here but as a description of the picture this is correct

The mirror is above the washstand, at the right side of the painting, ion the wall.

I can savtore my clothes in the furniture at the right hand of the bed.

I can savtore my clothes in the furniture under the teddy bear.

I can savtore my clothes in the furniture in the front of the carpet.

It is hard to describe the position of the furniture relative to the 'carpet'. I would say it is behind in the picture. Note a small carpet like this is more commonly called a rug. Carpet usually covers a whole floor.

The lamp is above the furniture at, to the left of the bed, aton the other side of the clock, up to thabove bed.

I am not sure what you mean by 'the other side'. If you mean compared to the bed this is correct.

You can get a book ion the red furniture, next to the clock, under the lamps and the paintings, before the window.

I'm not sure about 'before the window'

First image (kitchen).

I'm assuming this is a heading, so it's technically fine, but if you wanted to make this a sentence you could say: the first image is the kitchen.

The microwave is in the kitchen , ion the corner of the table, before the eggs, at the down of the sauce, ato the left side of the window.

I would suggest looking at an article on prepositions, look for things such as when to use "on" vs "in". Also what do you mean by before the eggs? Do you mean in front of the eggs? I wasn't sure so I didn't correct it. I didn't understand "down of the sauce" either. It would help if you specified the kind of sauce.

The fruits are above the refrigerator, down to the shelves, at the right side of the salad.

Are the fruits on the shelves? The bottom of the shelves? Below the shelves?

The flour is ion the shelve, atf, on the right side of the jam, up to the refrigerator and at the left side of the blender.

"Shelves' " singular form is shelf. I didn't understand what you meant by "up to the refrigerator", I'm assuming you meant above the refrigerator? (by the way, in common speech most people say "fridge").

The towels are in front of the washstand, aton the right side of the toilet, up toabove the floor and under the paint of a flower.

I'm assuming "up to the floor" is "above the floor?" "Up to" would imply that the towels were below the floor and were somehow tall enough to extend up to the height of the floor. I'm confused by "under the paint of a flower" though.

The toothbrushes are in the front of the mirror, they are placed up toabove the washstand and inside a cup.

"Up to the washstand" is confusing (see previous notes about the towels being "up to the floor")

The mirror is above the washstand, aton the right side of the painting, ion the wall.

"In the wall" would imply that the mirror was inside the wall.

I can savstore my clothes in the piece of furniture aton the right handside of the bed.

"Save" makes me think that you're purposefully taking clothes that are about be thrown out. Also, "right hand" is a phrase used to describe someone you would closely collaborate with- not for directions. It's a more of a poetic way of describing someone loyal.

I can savtore my clothes in the piece of furniture under the teddy bear.

Also, it would help if you specified what kinds of furniture these are. Are these storage chests?

I can savtore my clothes in the piece of furniture in the front of the carpet.

"The" is used for specific, countable nouns. "front of the carpet" is good enough, we don't need "the front of the carpet"

The lamp is above the furniture aton the left side of the bed, atnd the other side of the clock, up to the bed.

Run-on. Again, "up to the bed" is confusing here. You already said it was on the left side though, so I don't think you need more description. You should end lists of things with the word "and" for the final thing. (see "and the other side of the clock")

You can get a book infrom the red piece of furniture, that's next to the clock, and underneath the lamps and the paintings,. before the window.

what is the red furniture? Also, another run-on. "Before the window" isn't a phrase that's commonly used. Is it next to the window? In front of the window?

The switch to turn the light on/off

This is not a complete sentence. I would combine this with the next phrase.

Is next to the lamp, placed in the courtains, at the right sideright of the sofa.

The switch would not be "in the curtains" since that would imply that they are inside the curtains. I would look for a different direction word. Is it next to the curtains?