Making sense of 去华山怎么走比较好？ The following dialogue is in NPCR 2, Lesson 23, listening exercise 7 in the exercise book, and my attempt in translating it. 



I'm unsure about the sentence marked in red. I have not learned the pattern 比较+adjective until now but my Chinese friend told me that it's the comparative form of the adjective, so in this case "good"->"better".

But I can't make sense of this question. It's better compared to what? I also see a 走 (to walk), but in the next sentence they talk about trains and climbing. So how should I translate it?
比较 here doesn't so much accentuate the comparison between two or more objects/methods. It more gives you an idea of something that has a quality to a somewhat significant degree or above the average. (So in some way, it is a comparison, but a comparison to an unreferenced standard/average). 

It can be loosely translated into 'relatively', 'fairly', 'rather' or 'somewhat'.

Another example would be: 


  玛丽长得比较胖
  
  Mary is rather obese/overweight.