The International HPC Summer School 2022 will be held on June 19-24 at Novotel Athenes in Athens. Novotel Athenes is located at:
4 Michail Voda Str
104 39 Athens
Greece
Getting to Novotel Athens
By public transport
The closest Metro station to the hotel is station Larissis which is just 8 minutes walking distance.
By public transportation you can use the Metro blue line direction Agia Marina
At Syntagma station you change to the red line (direction Anthoupolis) to station Larissis, where you get off and in 8 minutes walking you can find the hotel. The ticket costs 9€ per person/way. Please bear in mind that metro runs from Athens Airport from 06:30 am to 11:30 pm.
http://www.athensguide.com/map/athens-metro-map.jpg
OR
You can take bus X-95 which runs 24 hours per day. Final stop is at Syntagma Square which is one of the main squares of Athens. From Syntagma you can continue either by metro (red line) to station Larissis or if it is after midnight by taxi (cost about 7,00 -9,00€).

By taxi
The cost is approximately 45 euro from the airport to Novotel Athens.