>>2809995 (OP)
Poland's pretty decent for lakes. Lots of old quarriers are now filled in, and make great swimming spots.
My mate used to rent out his apartment on Airbnb then camp out around this lake during the summer and swim across it every morning.
Around Krakow you've also go:
Kryspinow, up near the airport (picrel). Nudefags hang out around here in certain parts.
https://zalewkryspinow.pl/
Ruskecki
50.05001993407939, 20.160542138886942
Up beyond Nowa Huta. Get to pass the steel works on the way up. Loads and loads of lakes for fishing.
Chechlo
50.138392818636476, 19.450651685406783
Get the regional train to Trzebinia and take a walk down for 1.5km. It's like a small lake resort. Pretty chill. Cheap beer.
Zabierzow
50.11440955820606, 19.79023735682529
You can't swim here, but they have lots of fire pits.
Bagry
50.033389815809684, 19.99294202530118
Usually busy as fuck and full of cops who seethe at you drinking (i.e. fines)
One of my favourite ways to spend a day is to cycle to some of these places (can put bike in train), buy a couple of crates and sausages, make a little fire (where possible) and chill the fuck out by the lake.
Malopolska has lots of hidden gems beyond Krakow. Even ran into an American ranch the other day, kek