形容楼梯好走怎么说英语

To describe a staircase as easy to walk on, you can say that it is "smooth" or "even," or that it has "well-crafted" or "sturdy" steps. You could also say that it has "good traction," meaning that it is not slippery and provides a firm surface to walk on. Here are some examples of how you could use these words:
"The staircase in this building is so smooth and even, it's a pleasure to walk up and down."
"I love how well-crafted the steps are on this staircase. They feel sturdy and secure underfoot."
"This staircase has excellent traction, so it's never slippery or treacherous to climb."
Alternatively, you could simply say that the staircase is "easy to walk on," or that it is "comfortable" or "convenient" to use. For example:
"I find this staircase really easy to walk on. It's not too steep, and the steps are a good size."
"This is a very comfortable staircase to use. The handrail is at a convenient height, and the steps are evenly spaced."