Compared to the rest of the Greater Boston market, the Willimantic region has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 2 listings have been posted online, which means leases are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 850 sqft. Most properties in this market are close to 2 stories. Most buildings in this market were built in 1925 and are Class C.