This is a good short hike. The whole trail is basically gravel and remains fairly flat in elevation. There are numerous "windows" (arches to enjoy). North WIndow, Southern Windows and the Turret Arch. This hike can get both hot and crowded at times. Personally the best times are in the morning at dawn, or near dusk. The air is cooler the lighting off the rocks gives off the most inspiring reds and oranges that can't be seen during the middle of the day.
Tips: To get there, drive 9 miles into the park from the main entrance until you reach Balance Rock, then turn right at Balanced Rock and drive another 3 miles. Follow signs to the Windows and park in the parking lot near the trailhead.
Because this hike has such great scenery it is often overcrowded, so it is best to attempt early in the day or later in the afternoon. These are also better times to walk around the WIndows because it is cooler, and if you hike around the golden hours (around dawn and dusk) the rocks will turn shades of orange and red you never thought possible.