The sitting-room

The sitting-room of in my house is spacious. it It has big windows looking out onto the exterior yard. Said The windows give access to the balcon. Inside, the walls are made of cement and painted of a in light grey colour. There are two leather light beige sofas light beige leather sofas. There are two wooden rectangular white shelves two wooden shelves that are white and rectangular. A wooden dark brown floor The floor is wooden and dark brown. The TV is lain on a furniture TV stand with drawer, it is quite longer than width much longer than it is wide. What more stand out of stands out most in the room when you enter is a calabash (a plant, Poto in Spanish) placed in a narrow wooden frame.

Over all you english is very good!

The sitting-room

The sitting-room of my house is spacious, it has big windows looking out onto the exterior (?)garden/street?. Said windows give access to the balcony. Inside, the  brick walls are of cement and painted of a light grey colour. There are two leather light beige leather sofas. There are two wooden rectangular white shelves. A wooden dark brown wooden floor. The TV is lain standing on a rectangular table that has a furniture with drawer, it is quite longer than width. What more stands out of in the room when you enter is a calabash (a plant, Poto in Spanish) placed in a narrow wooden frame.

When you use more than one adjective to describe a noun there is a certain order to use them:

Opinion, appearance, age, colour, origin, material  NOUN

The sitting-room

The sitting-room of my house is spacious. It has big windows looking out onto the exterior (that works!). Side windows give access to the balcony. Inside, the walls are made of cement and painted of a light grey colour. There are two leather light beige sofas. There are two wooden rectangular white shelves and a wooden dark brown floor. The TV is set on a table with drawer; it is quite longer than that it is wide. Else stands out in the room is When you enter is a calabash (a plant, Poto in Spanish) placed in a narrow wooden frame.

The Sitting Room

The sitting room of my house is spacious, it has big windows looking out into the outside. These windows open up onto to the balcony. Inside, the walls are made of cement and painted of a light grey colour. There are two leather light beige sofas. There are two wooden rectangular white shelves. A wooden dark brown floor. The TV sits on a table with drawer, it is much longer than wide. What more stands out most in the room when you enter is a calabash (a plant, Poto in Spanish) placed in a narrow wooden frame. (not sure what a frame is... alcove?)

Excellent work!  Just a few notes:

1 - English title capitalization rules are different than Spanish

2 - no dash needed for Sitting Room.  This may be a more common term in the UK, but in the USA we say 'living room'