Advanced Portuguese Lessons Wanted (Rio de Janeiro)

Hi folks,

There are lots of threads regarding Portuguese lessons but I'm looking for specific lessons. I speak fluently because I learned Portuguese at home but I need to greatly improve my writing skills (I can read well), especially professionally. One-on-one lessons are preferred.

If you think you could be helpful, please message me. Please include experience and cost information.

Finally, I'm looking for about one or two lessons a week for several months (unless not needed). I can only meet during non-working hours.

Thanks in advance.

Marco