Edmonds' 7th & Elm Park is located about a half a mile east of downtown Edmonds between 7th and 8th Avenues on Elm Street. (GPS: 47°47.985' N 122°22.252' W)
This little neighborhood park is on the north side of Elm street, a few blocks west of 9th Avenue. It has grass for sitting and trees for shade. Apparently dogs are welcome here, as there are no "No Dogs" signs, and there is a sign at each end of the park reminding you to follow Edmonds' leash and scoop laws.
7th & Elm Park Locator Map