Marie A. Presti receives multiple phone calls each week from 20-something-year-olds looking for apartments.The conversations often begin with enthusiasm, but take a turn once the callers learn how much rent costs, plus fees.“They say, ‘I can’t afford that,’” said Presti, a broker and owner of The Presti Group. “They’re stranded in a way because there’s not a lot of inventory -- and what’s available they can’t [...]