There is no block hotel booking for the workshop, but for hotels in Erlangen we recommend The Niu Cure https://bit.ly/3VrZ9LR, Hotel Stadthaus https://bit.ly/4a57h9B or Hotel Bayerischer Hof https://bit.ly/3vjatzk (though many other nice alternatives exist).
Nuremberg is the nearest airport to Erlangen, the number 30 bus will take you from Nuremberg airport to central Erlangen in around 30 minutes. The easiest way to organise and pay for public transport in Erlangen/Nuremberg is the VGN app https://www.vgn.de/service/app/. Train (https://int.bahn.de/en) and bus (https://global.flixbus.com) connections to Erlangen are also available from Frankfurt and Munich airports (these can also be jointly booked with Lufthansa).
ECAP is located at Nikolaus-Fiebiger-Str 2, 91058 Erlangen (https://maps.app.goo.gl/bRN8AgDrBK5QHgJu7), and is a 15 minute bus ride (number 20 from Erlangen Arcaden, every 20 minutes) or 45 minute walk from Erlangen Main Station.