Tucked in among the many sleepy facet streets of Manhattan’s Upper East Side, the Lowell Hotel is a perfect balance of subtlety and luxury. From the brick facade that blends into the neighborhood to the intimate lobby and bar, every little thing about this space feels particular. “There may not be bargains at this resort, but it’s worth each penny,” said one reader. The interiors additionally feel carefully curated, courtesy of designer Michael S. Smith, who was additionally tapped to design the Obama White House. With the common house worth reaching $436,800 in the first quarter of this yr — …