check out an excerpt of a email I sent to another friend of mine who was inquiring if knew of a good Spanish teacher:
In regards to my spanish teacher...I think she is amazing! She has been teaching for many years and is very experienced with English speaking natives. She has great material, which she makes copies of for free, she knows it very well and can reference it quickly at any time during the lesson. The material is older because she uses books that she utilized when she was teaching Spanish in Spain, but the Spanish language has not changed much since then, so it really doesn't matter. Any minor differences between spanish from Spain and that here, she has already made note of, in the material and will elaborate on. She speaks English very well and has a natural knack of gauging what level her students are at. She does this by offering a free evaluation prior to beginning. She interjects interesting anecdotes into the lessons regarding Argentine history and will take you up on the offer to meet to discuss politics or economics. She offers explanations to things that make sense to me (i.e. reflexives, pronouns) and she personalizes the lessons surrounding the grammar you go over. She charges very little, much cheaper than other private tutors and she is flexible with scheduling (you can pay after each class or a wk in advance~at least that's been my experience). She located in a great section of Recoletta (next to the cemetery) and last but not least, she serves great coffee or tea when you ask for some (at least for me she does). Overall, I highly recommend her, as I feel that my spanish has improved tremendously since I first started working with her.
Her name is Adriana and her number is 15 65416950. Good Luck!