Dear Mrs Kate Ashby,
I would like to apply for the job in your cafe, which I saw advertised in a local newspaper (nie pasuje mi zbytnio druga część zdania... może coś w stylu "..., which advertisement I saw in a local newspaper." ale też nie jestem pewna poprawności)
At present I am studying linguistics at nearby University. I have a reasonable command of English and French. My uncle is a cook in one of the Hilton hotels, so I have quite big knowledge of cooking and different kinds of food. I live close to your café, so for me it is the best place to work at weekends.
The reason I am applying for this job is that I need to earn some money for my hobby and passion, sailing. As I HAVE (ALREADY) SAID, I have some experience with cooking and I like it. I have also good contact with people, I get on well with nearly everyone. My friends are saying/SAY that people simply like me. At weekends and on Mondays I have free time, so I can work for long hours without any problems. Besides that I AM looking for some new experiences.
I would be happy to attend an interview or to provide some references. I would appreciate being given the opPortunity to work in your cafe. I look forward to hearing from you. (ten zwrot bardziej mi się kojarzy z listami nieformalnymi, chociaż pewnie i w takim może być. Ja bym proponowała coś w stylu "I will be grateful for an early reply")
Yours sincerely,
XYZ