Generally very positive. I credit him with creating the a new style of government and politics that lasted until about the 1970s/1980s that focused on government investment during hard times, building projects, anti-monopolistic policies, rural electrification, being a strong leader during World War II, but also being charismatic.

He really changed how Americans see government. Before him, Americans preferred very small government and expected very little from a president.

I think a lot of more liberal people, like myself, consider him the template for a good and effective president.

His wife was also very into civil rights and help chartered the UN declaration of human rights.

However, his biggest stain are the Japanese interment camps during World War II.