Can't tell from the picture. If I pull into a site like that I'll get out the level and roll around and try to find the most level spot. Then level the best I can without heroic means. If I like the campground but the site wasn't level I'd scout for better sites, and try for a transfer. If none available, I'd make note of level sites for future visits. If the site is billed as level, but is significantly out of level, I'd complain to the front office (or escalate) and attempt to get the description changed. OTOH I would not expect any site to be absolutely perfectly level- a leveling block or two isn't going to hurt anything.
Looks like a pretty site and extra effort can be worth it for a pretty site.