Here is a blog that has quite a nice list of ideas of things to do and things to see in Paris
http://www.nyhabitat.com/blog/category/paris/, they also list apartments for vacation rentals so that may be your solution for accommodation in Paris. I have used them in the past and they are serious + their agents can give good advice for any other question you may have. Paris is a beautiful city and well worth visiting. In August most Parisians are away on holiday but you will see many other tourists enjoying the sites throughout the city.