Info on English private lessons please!! (Bogotá)

Dear all:

My sister needs to improve her English skills on the next months until mid-February. Since she has a full time job and a very tight schedule, going to an institute on a daily basis is not an option. That said, we thought private lessons could be the way to go.

Since I know some of you work on that, I was wondering if you could be so kind and give me some info on how does that work, rates per hour, material used on classes, places/people to contact, and any other information you think would be important to know.

You can reach me at my personal email: Protected content , and I can put you in touch with my sister.

Many, many thanks for your help!

Best,

Carolina