Unable to answer "What kind of parking is this?" – Parking Lot – way/381859864 via StreetComplete 58.2:

This lot had been closed in favour of a paid one to the north-west.

Unable to answer "Do you have to pay to park here?" – Parking Lot – way/366899131 via StreetComplete 58.2:

Not a parking lot. Just an empty patch of land

Unable to answer "Is this still here?" – 支笏湖ユースホステル (Hostel) – node/3026248662 via StreetComplete 58.2:

Looks like it's been torn down

Set of stairs here. 134 steps.

via StreetComplete 58.2

Attached photo(s):
https://westnordost.de/p/237548.jpg

Unable to answer "What’s the surface here?" – Path – way/777502186 via StreetComplete 58.2:

This path doesn't seem to exist here. All wilderness.

Unable to answer "Is this motorcycle parking covered (protected from rain)?" for node/6779084285 via StreetComplete 51.1:

You can park motorcycles here, but it's not a dedicated motorcycle parking space.

Unable to answer "What kind of building is this?" – way/546460722 via StreetComplete 57.1:

It's a fountain

Unable to answer "What kind of building is this?" – way/546460721 via StreetComplete 57.1:

This is a patch of fountains with a path through it

Unable to answer "What kind of building is this?" – way/436681120 via StreetComplete 57.1:

This building is the ticket office to the bridge. Should be merged with the building next to it, which is tagged as the ticket office instead. Only this building is the correct location, the one next to it is misplaced.

Unable to answer "What kind of memorial is this?" – 名勝 錦帯橋 (Memorial) – node/4345593704 via StreetComplete 57.1:

This bridge is the memorial. Not sure how to tag this.