I have to write a motivation letter to my erasmus university. It's my first attempt.

Dear Sir or Madam,
My name is Diego Valle and I am currently in my the last year of my Industrial Engineering degree at the Faculty of in the department of engineering of at Bilbao, in the field of Manufacturing. (Diego: Do you mean "Mechanical Engineering" or "Industrial Engineering"? I applied for the Erasmus program and I have got a place in Kaiserslautern for the next academic year.

I think that developing studying for a Master's degree Thesis at in a foreign country is an excellent opportunity to complete my education the studies and the knowledge gained in my university. (Diego:Do you mean studying for a master's degree? Or writing your master's thesis in a foreign country?) From the beginning I was sure I wanted to go to Germany. It's the perfect place to acquire experience with the excellent job opportunities. imminent entry into the labour market.
I chose the Technische Universität Kaiserslautern as my first option choice because, looking for through the information through on your web site and asking known people who is already there and speaking with current students has given me a really good impression. It is a major very important university for referring to engineering due to the large variety of different courses that it offers. I am very interested in the field of manufacturing, in any of its branches, and as well as mechanics, especially in automotive industry, so I would like to develop my Master Thesis on one of those topics.  It would also be a very good opportunity to learn experience different ways to work of working, which will be good for my personal experience.
Furthermore I’ve found Kaiserslautern as is a nice city to spend in which to spend my Erasmus program. It is very well located and it has good communications, (Diego: what do you mean? It has good transportation, so yo can travel around? It has great wireless connections? It's not clear what you are trying to say) and it seems that the university environment is ideal for overseas students to actively speak German and meet new people. This experience could would be a great chance opportunity for me to improve my German language skills.
Please do not hesitate to contact me if you required further information about myself. Thank you for your consideration.