Unable to answer "What type of bicycle parking is this?" – Bicycle Parking – node/387836832 via StreetComplete 61.2:

There is no bike stand. This place is for bikes from the hotel

Unable to answer "What diameter is specified on the sign for this fire hydrant?" – Pillar Fire Hydrant – node/5652524243 via StreetComplete 61.2:

This is an upright one with no sign

Unable to answer "What’s the house number of this building?" – Detached House – way/246135743 via StreetComplete 61.2:

This is a Carport an belongs to house No7