-Describing a place

My favorite room in my house is.my kitchen. Perhaps because the kitchen is the most important room in many homes, but ours is actually a very special place, because not only this is where we cook and eat, but also this where my family and friends come together.
I have so many happy memories including ordinary daily events, such as making breakfast in the dark, cold winter mornings, having big Sunday meals with my whole family, spending afternoons and having countless wonderful times there with those I love or special ocassions and while cooking, and preparing Christmas dinners or making decorations for a birthday party.
So what does this special room look like? In our case, it is much bigger than an ordinary kitchen, in fact, it's huge compared to most. It's big enough to have a large rectangular table in the centre. At one end there is a big cooking stove. Next to the stove there is a sink and large fridge. At the other end there is a large wooden cupboard. Next to the cupboard,  there is a TV mounted on the right wall with a shelf full of books and DVD's.
We use the kitchen not only to cook and eat, but also to relax, to watch movies, to spend quality family time and to have lots of fun.
What I like most about this room is that all the family and friends are constantly coming into the kitchen and joining in whatever is happening at any given time of the day.
I definitely think that the kitchen is the heart of the house.  I have no doubt thay some of the happiest times of my life have been spent there... or  "No doubt I have spent the happiest time of my life there!"

WRITING

-Describing a place

The room in our house I like best is our kitchen. Perhaps the kitchen is the most important room in many houses, but in our house, it is actually a very special room because it's not only where we cook and eat but also where family and friends come together.
I have so many happy memories of time spent there. Ordinary daily events such as making breakfast in the dark, cold winter mornings, having big Sunday meals with all my family, spending afternoons and having wonderful times there with those I love or special occasions such as cooking Christmas dinner or making decorations for a birthday party.
So what does this special room look like? In our case, it is much bigger than an ordinary kitchen, in fact, it's a huge one. It's big enough to have a large rectangular table in the centre. At one end there is a big cooking stove. Next to the stove, there is a sink and a big fridge. At the other end, there is a large wooden cupboard. Next to the cupboard, in the right wall, there is a TV with a shelf full of books and DVDs.
We use our kitchen not only to cook and eat but also to relax, to watch movies, to spend time with family and to have lots of fun.
What I like most about this room is that all the family and friends are constantly coming into the kitchen and joining in whatever is happening at any time of the day.
I definitely think that the kitchen is the heart of the house.
Without doubt, some of the happiest times of my life have been spent there.

I put a few commas, corrected 2 spelling mistakes, removed the colon and replaced with a fullstop. Very good writing, I could imagine your kitchen from your description and I enjoyed how easy it was to follow. I imagine many people could relate to your story, I could though our kitchen was kitchen, dining and lounge with dividing walls removed making the 3 rooms into 1 effectively.