Greetings, Liliana!
I find it surprising to have come across someone here who lives in the same city! I have been using Freelancer for over two years (I used to have ratings and so on, but it looks like they vanished when the site was changed). I have been working for many clients and with several collaborators, always delivering original and correct articles on time. I can provide you with many samples, should you request such.
Currently, I am also dealing with other assignments and can deliver 1000-2500 words a day, depending on factors such as article topic. I can deal with both UK and US English and can write in various styles. It is all fine as long as I get good, clear instructions.
I hope we can collaborate, looks like we have eliminated time zone problems, as well as (on my side, thanks to your great reviews) trust issues. Hopefully I can earn your trust, too!
Looking forward to hearing from you!