Peter Argondizza - Teaching in New York City. Doctorate in Guitar from Yale University/ Over twenty years successful teaching in Europe and the United States.

Perfetto!
I started going to Peter about a decade ago with a lute. This was my first string instrument and after a few years I moved on to guitar. We covered a wide variety of styles from Sor to Dylan and I had great time doing so. Since Peter returned to the States last year we collaborated on an Irish song via Dropbox which he transcribed from a YouTube video. My all round musicianship and confidence has improved greatly while studying with Peter. His musical knowledge is vast and he is well read in many other areas. A real Renaissance man. I would highly recommend him to anyone who is open to new musical experiences and is looking for expert musical tuition from a maestro.

I have been a student of Peter's for a total of seven years spread over twenty five years, first of the classical guitar and latterly of the baroque lute. I can recommend Peter unreservedly as an exceptional teacher with a rare breadth of experience of the guitar in all its genres combined with an equally rare equivalent breadth of musicianship and scholarship.
Peter has many talents as a teacher of which for me the most important is that he wants you to succeed. From that grows confidence and ambition. He then backs that up with an acute ability to identify and analyse technical problems and how to deal with them. Peter's teaching practice therefore moves on a broad front where the inevitable technical challenges involved in playing the guitar are combined with musical insight and encouragement into what is to be gained by overcoming them. This combination of technical analysis with musical sensibility I found inspiring and it propelled me to levels in guitar playing,which I would never have dared to attempt otherwise.
For any guitarist at any level the benefits of a good teacher are tremendous; it is all too easy, as I know myself, to reach a plateau where you can kind of play lots of things but nothing really well. Either that, or lacking guidance, fall into bad habits which practice simply reinforces and which are then very difficult to correct. Or, the classic, sometimes you can play a piece well but other times not and each time you start the piece you have no idea whether it will be one or the other or why it is that you have no real control of the performance.
Peter has the ability to sort these kinds of problems out and he sorts them out creatively and constructively in a way which always seeks to find the good in what you're doing by turning what were stumbling blocks into positive additions to your experience as a player. My experience of taking lessons with Peter was of a shrewd investment which fundamentally improved my playing. That was my experience and I think it highly likely that it will be yours as well.
Real talent as a teacher is something not given to everyone but it has been given to Peter. For any player therefore wishing to benefit from the many advantages that good teaching can bring to them I would have no hesitation in beating a path to his door.