finished holidays My Holidays Are Over

Hi. Today had finished my holidays my holidays ended. I had been in Mojacar (Almeria). It´s very hot in Mojacar there but there´s a nearly beach to me near my home, and I also had a big pool in my apartment. I visited many places, like Taberna´s desert with his that has a theme park about the wild west. I had tested ate Mexican cuisine, and tried the with his tacos and quesadillas that certainly are were deliciously spicy. Well for Today I´m in my home, in Sevilla, replenishing my energy together to with my Air-conditioner.

Bye

Good job.  It's not very common to begin a letter with "Hi" so I would suggest using "Hello" instead. "Hi" is more common when you are greeting someone in person.