Intensive Spanish Courses in Guate (Guatemala City)

Hello,

I moved to Guatemala about a month ago, and so am still learning the ropes. I'm living and working in Zona 15. My best friend from home wants to come stay with me for about a month in May...her goal is to take some sort of intensive Spanish classes or tutoring while I am at work. Research online pretty much says that the ideal place for her to do this would be in Antigua.

Does anyone know of any schools and/or teachers in the city that host a good (and flexible) program that she could attend for about one month? Any advice is appreciated!

Thanks!
Kaelyn