He sits okay with me.

Some iffy policies, but more good than you'll find with probably any other 20th century president. At the least, read the bolded part.
--Helped get immigration restrictions/quotas passed
--Repeated cuts in the income tax, in spending, and in the federal deficit
--Increased the estate tax, and created the gift tax
--Had a solid understanding of our federal system:
"As Governor of Massachusetts, Coolidge supported wages and hours legislation, opposed child labor, imposed economic controls during World War I, favored safety measures in factories, and even worker representation on corporate boards. Did he support these measures while president? No, because in the 1920s, such matters were considered the responsibilities of state and local governments."
--Preferred a non-interventionist foreign policy
--Against joining the League of Nations
--In favor of joining the World Court, but with U.S. not bound by its decisions
--Advocated diplomacy over war:
...The Kellogg-Briand Pact of 1928...committed signatories including the U.S., the United Kingdom, France, Germany, Italy, and Japan to "renounce war, as an instrument of national policy in their relations with one another."
--Continued the policy of not recognizing the U.S.S.R.
--Continued the policy (started by Wilson) of supporting the Mexican government against rebels there
--Continued occupation of Haiti and Nicaragua, but withdrew from the Dominican Republic
Here is what he had to say about farm subsidies:
He vetoed the proposed McNary-Haugen Farm Relief Bill of 1926, designed to allow the federal government to purchase agricultural surpluses and sell them abroad at lowered prices. Coolidge declared that agriculture must stand "on an independent business basis," and said that "government control cannot be divorced from political control." He favored Herbert Hoover's proposal to modernize agriculture to create profits, instead of manipulating prices. When Congress re-passed the McNary-Haugen bill in 1927, Coolidge vetoed it again. "Farmers never have made much money," said Coolidge, the Vermont farmer's son, "I do not believe we can do much about it."
Here is how he handled natural disaster relief:
Coolidge has often been criticized for his actions during the Great Mississippi Flood of 1927, the worst natural disaster to hit the Gulf Coast until Hurricane Katrina in 2005. Although he did eventually name Secretary Hoover to a commission in charge of flood relief, Coolidge's lack of interest in federal flood control has been much maligned. Coolidge did not believe that personally visiting the region after the floods would accomplish anything, but would be seen only as political grandstanding, and he did not want to incur the federal spending that flood control would require. Congress wanted a bill that would place the federal government completely in charge of flood mitigation; Coolidge wanted the property owners to bear much of the costs. When Congress passed a compromise measure in 1928, Coolidge declined to take credit for it and signed the bill in private on May 15.
Here is his reason for not running again in 1928:
...He announced his decision to reporters, in writing, with typical terseness: "I do not choose to run for President in 1928."

Okay, more of an explanation:
"If I take another term, I will be in the White House till 1933 … Ten years in Washington is longer than any other man has had it—too long!" In his memoirs, Coolidge explained his decision not to run: "The Presidential office takes a heavy toll of those who occupy it and those who are dear to them. While we should not refuse to spend and be spent in the service of our country, it is hazardous to attempt what we feel is beyond our strength to accomplish."
**These are from just skimming through Wikipedia.