Hiya,
I don't know the charleston, only know limited Lindy Hop (love it) but I do know Rock N Roll and I know City limits very well, I go there in a rock n roll dance group. I can vouch for it and they do private lessons you just tell them what you wanna learn and they will teach you. Igor is a good one to ask for. I am also wanting to learn charleston as well and lindy hop too! but I don't have a partner so that is my stumbling block, so I am looking for a female dance partner to dance these with me. The private lessons are £30 an hour for the highest quality tuition so if you have a partner that is £15 but it is one to one tuition.