Do you have any recommendations for accommodation near this park? Is it easy to get from accomodation to the park itself?

You need to peruse the Japan-guide website.

https://www.japan-guide.com/e/e3850.html

I did this but no mention of accommodation

You need to be more specific - what kind of accommodations are you satisfied with? And what exactly does "near" mean to you?

Never mind. It was a general question and I only needed some general ideas and information as its a first look into the area. Just trying to see what sort of thing was available and where before I decide whether to go there or not. It seems that the question elicits the "You need..." type of responses so I'll withdraw. I am not an inexperienced traveller and don't much enjoy being spoken down to.

You are not being spoken down to. But unless you give more info it's a wild goose chase trying to help find the most suitable accommodations. So please give more thought into how expensive a place you are considering, as well as how much your destination is a priority and fits into your overall itinerary. As one idea, you could stay at a Toyoko Inn in Ashikaga City - nothing fancy, but clean, quiet, decent, internet ready, conveniently located and they throw in breakfast for free. No way of knowing if that satisfies you or not - or you could always use the typical booking engines like hotels.com, agoda, booking,com et al and plug in Ashikaga City - but you already knew that.
Best regards.

Thanks