Thanks for you answers. I think it is clear now.
My application will operate in typical environment so I think I will let those GPI float.

Thanks for reply.

So just to clarify things, as for the GPIs in range 34-39 I'm using only GPI 34 and 35, so I assume I should connect external pull-ups to GPIs 36-39, because those pins don't have internal pull ups, is that correct?

Hello, I'm designing PCB for my device, it will use ESP-WROVER module as main MCU. I can't find answer to my question in the datasheet nor on the forum. I'm using only half of the GPIOs, what should I do with unused pins? Is it ok to leave them float? Maybe I should connect them to VCC via pull-up r...