Hi,
https://www.openstreetmap.org/way/1411633252 is too small for a horse riding center, as described on https://wiki.openstreetmap.org/wiki/Tag:leisure=horse_riding. It is just some round pen, probably for horse training. These round pens are usually tagged like riding arenas/rings: leisure=pitch + sport=equestrian, example: https://www.openstreetmap.org/way/1151081174