Realtor Lisa Alsteen shows off the features of a century-old four-bedroom house near the courthouse in Rhinelander. Painted blue on the outside, it has wood floors, a sunny living room, and an inviting porch in front. Alsteen listed the home, located at 133 North Oneida Avenue, on Monday. By midday Tuesday, several potential buyers had already been though for showings. She expected an offer wouldn’t take long. That’s typical these days. Last spring, the demand for Northwoods homes shot skyward,