Now that I've played the game properly, I can answer this better.
Gerudo - they have the liveliest town in the game, and really engage their general area well in terms of quests, even their main game quest portion is the more engaging in the game.
Hylians - they have the unfair advantage, since they are the most spread out in the game with three different villages, every stable, and they also are the race that traverse the land the most. It's easier to connect with them because they have more characters to get fond of, simple as that.
Rito - true, their town isn't so large, but I enjoy going there a lot. I love the verticality and the airspace they take up, love the cozy atmosphere.
Koroks - they are adorable and their forest is really nice, I like the atmosphere a lot, and Hestu is just fun overall.
Goron - they aren't the most engaging race for me (a bit one-dimensional), their town is nice, not overly much to do, however, the way they are spread out to the hot springs, the mines, it makes their area come alive more.
Zora - Zoras domain is always the most beautiful area in the game, and this is no exception. The gear they give you is the most enjoyable in the game, but as grandiose as the town is, it consists of a lot of empty space. You walk long corridors that lead to nothing, or they loop around and bring you right back where you left. I find that I try to go there early to get the gear and to mine, and then leave off their portion of the main quest for later. They have been my favourite race in Zelda for the longest time, and they are enjoyable, but the emptiness of the town just means I spend less time with them overall, especially since I more often traverse the cliffs rather than spend time with them as a race.