High-tech firms find fertile turf in South Boston Low rents, amenities boost Innovation District ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page pat greenhouse/globe staff Roz Takata (right), of Keystone Tower Systems, at work at Greentown Labs, in South Boston. At left was Jason Ethier, of Dynamo Micropower. pat greenhouse/globe staff Keystone Tower Systems’ Eric Smith demonstrated a laser scanner designed by his company. pat greenhouse/globe staff Olivier Joubert of Aldebaran Robotics worked with the company’s programmable humanoid robot. PAT GREENHOUSE/GLOBE STAFF The incubator space at Greentown Labs, which is located in South Boston’s Innovation District. David L Ryan ,The Boston Globe A popular restaurant in the Innovation District is Sportello, a high-end Italian dining spot that restaurateur Barbara Lynch debuted in 2008.