About the site
As you can see, it has DA of 34, which is nice and most importantly it receives around 2.5K traffic. The site has nice design, and is niche site. Most of the sites that offer guest post has all niches which is common these days. So I was surprised to see niche site relevant to my niche.
Article
The article was okay, didn't appear to be spun. There were internal links to relevant post as well. There was image added as well, which looked unique and was relevant to the article. Now, most of the articles on this site had outbound links, so looks like they are selling guest posts and no original content is being added recently? I just checked few random posts, and all of them had outbound links.
Overall, I would say it is pretty good link since it is highly relevant and the site receives traffic.