My last weekend

I went to Madrid on Friday and I ate in a Senegalese restaurant. On Saturday's morning I went to a demonstration and later I drank some beers into the night. At night some people went to my friend's house, and we celebrated his birthday. On Sunday's morning I slept and later I went to have lunch in one restaurant. Then I had coffee in an Arabian's restaurant. Finally, on Monday I went to have lunch at another friend's house and came back to Aranda.

Strong effort.  You have run-on sentences so be sure to review those rules.  Also, review the use of article and how the names of countries change when they become adjectives.  Try not to sound redundant, "I went, I did, etc."  Insert more variation into your sentences, and create compound sentences.  But good job!