Unable to answer "Is drinking water available here? If so, what is its source?" – Izvorul lui Dutu (Drinking Water) – node/12234519740 via StreetComplete 61.1:

On private ground behind a fence

Camping Area "Kamping Lakosa"

via StreetComplete 53.2

Unable to answer "What’s the height limit below the bridge?" – D-555 (Primary Road) – way/732539648 via StreetComplete 61.1:

There are actually two lines, and one has no height limit.

Unable to answer "Is drinking water available here? If so, what is its source?" – Ecklesbrunnen (Drinking Water) – node/727410393 via StreetComplete 58.0:

Aus einem metallhahn in einem Steinobjekt sprudelt Trinkwasser, was aber eine braune Färbung aufweist

There is a short parking lot on the side of the road.

via StreetComplete 61.1

90 Treppenstufen mit längeren Absätzen dazwischen ;)

via StreetComplete 61.2

Unable to answer "Is the water potable here?" – Spring – node/10683433323 via StreetComplete 61.1:

At this place is a hidden beach, I was there all day but I didn't see any kind of water tap etc. (?!)

At this point is a metal gate across the street. When I arrived, it was open. In the evening a man came and said that the road - starting from this gate - belongs to his property (the house at the end of the road).
He wanted me to pay 3€/300 ALL for parking with the car [there was no sign on the gate or whatsoever]. I'm not sure what is the best type to add this information, maybe mark the road as private, or add a "paid parking along the street" etc. After the gate is room for two cars, but there are no official parking lots.

via StreetComplete 61.1

Max. Width 2,5m

via StreetComplete 61.1

Water tap with drinking water (according to the locals)

via StreetComplete 61.1