Copywriting 10 Articles for a Ski resort

I require 10 articles (approx 500 words per article), each focusing on a range of topics in relation to Bansko, a ski resort in Bulgaria. The articles will be used in a website to promote the resort and I will provide specific topics for each article. The basic requirements include: 1. The articles must include several supplied key words for SEO purposes; therefore experience in SEO specifics is essential. 2. The articles must have excellent grammar and spelling. 3. They should be written in an easy-to-read friendly conversational manner, but should also sound professional. 4. The work MUST NOT be plagiarized, original copy is a prerequisite. This will be verified using library database and search software. 6. Please provide examples of your previous work and any relevant prior experience. 7. I expect reasonable revisions to be made within a 4 week period. 8. Could you please provide an answer to the following question as a part of your bid? What do you consider to be the optimal keyword density for web content that is SEOed? I would like to review the first article written before the remaining is started, but within this limitation a short turnaround time is essential. Details of the specific article topics will be given on approval but some examples include; About Bankso; History; Ski Review; Winter Activities; Summer Activities etc Thanks for your time, Jay.