Unable to answer "How many bicycles can be parked here?" – Bicycle Parking – https://osm.org/node/12157631919 via StreetComplete 63.0:

There are a lot of bicycles parked here, maybe like 30. But it's unclear to me if the parking is generally available or locked and for private use only. Also parking racks are for maybe 15 bikes, but there's way more parked here.