When you write about a building, use it's got to describe its different parts:
It's got a red door. It's got grass on the roof. It's only got one room.
Use extremely, very, quite and not very to describe the house:
It's very big. It's quite big.
Say why the building is interesting:
The unusual / strange thing about this building is that ...​

I enjoyed my last winter holidays very much. I didn’t go anywhere. But I had a good time staying at home. I had a plenty of time and read many books, magazines, newspapers every day. I also watched TV, listened to the music and went out for a walk. The weather wasn’t fine all the time. And when it was sunny and it did not rain, I could walk for a long time. When it was frosty and there was much snow, I played in the yard, went skating, skiing and tobogganing. I helped my parents about the house. I cleaned our flat, cooked meals and washed up. I went shopping almost every day and saw my friends. So I had a wonderful time.

This time last year "(1) I was cycling " in the rain along a country road in France with friend of mine. We "(2) had decided " to go on a cycling holiday in Normandy. Neither of us "(3) had been " to France before but we (4) knew some French from our time t school and we "(5) had managed" to brush up on the basic. Now we (6) were wondering if we "(7) had made" the right decision.

We (8) had planed our route carefully in advance, but "(9) we had forgotten " one important thing: the weather. It (10) had been raining solidly since our arrival and that night we (11) ended up sleeping in the waiting room at railway station. Then the next morning we (12) rode down hill, my bike (13) skidded on the wet road and I (14) fell off. I (15) realized immediately that I "(16) had broken" my arm, and after a visit to local hospital I (17) caught the next train to Calais for the ferry home. Unfortunately my parents (18) didn't expect me home for a fortnight, and 19had gone away on holiday. So I (20) spent a miserable couple of weeks alone, reading "Teach Yourself French".