Sanji went to rescue Robin, Nami and Shinobu because Drake and Hawkins were hunting the Strawhat crew since they got info they were there at the Flower Capital.
Sanji seeing Nami naked was an accident, since Nami dropped her towel covering her body. Plus, that bathhouse had people in the very same way, literally everyone looked at Nami
So you are complaining about how Oda wrote the story and the fact that it completely worked and made sense this way? So you're mad because Sanji used the suit for disguise and they didn't recognized Sanji in the damn suit?
What is even your point
Lmao, i was right, braindead hater hating for the sake of hating
If you invested your time reading, things would be different