At the same timing with Kawazu-zakura, Nanohana are also at their peak. Nanohana field is close to the place of Kawazu-zakura, the main place of the festival. As for the place of Kawazu-zakura, see Minami-Izu: Kawazu-Zakura.
The Nanohana field is located at a junction. Family Mart is a landmark.
Around the field, there are several good local restaurants. I visited Jizakanaryouri-shin (地魚料理 信) this day (https://tabelog.com/en/shizuoka/A2205/A220505/22019360/). Sashimi-rice bowl is their speciality. You can eat fresh sashimi caught at a near port. Alfonsino is also a local speciality.
Hinno Minato, Minamiizu-chō, Kamo-gun, Shizuoka-ken 415-0152, Japan