Ate at aramburu approx. 3 years ago when it just opened..we were the only people there with the owner's family so we got to chat to the chef who had trained in NY and was hoping to bring something new to Bsas.
The food and experience was great and the service really friendly...worth visiting once at least...but I don't recall it being in San Telmo, felt more like Cinstitucion to me so we were doubting it would take off..glad to hear it's still going.