There is a parking lot available for visitors of Minera lead mines. You can also enjoy a picnic on the grass area where there are benches provided. Parking is free of charge, however, it is unclear if overnight parking is permitted. There is no staff present at the parking lot. Additionally, there are pleasant walking trails around the lead mines.
The parking experience was peaceful and I did not stay overnight. However, the toilets were closed during the night in July, with shutters over the doors to restrict access. Although the public toilet app indicated that a radar key would grant entry, it was not compatible with the shutters.