Hozenji /法善寺 is located center of the Osaka in Namba, that is why evryone get there easily. There are some high-end Japanese traditional restaurants at the north-side of the temple so after pray at the Hozenji / 法善寺, you should try real Japanese high-end food near the temple.
Foodie should try these restaurants as well.
Hozenji / 法善寺
1-2-16 Namba, Chuo-ku, Osaka-shi
5mins walk from Subway Namba Sta
Subway Namba (地下鉄なんば)