Greetings ~ We'll be arriving in Athens on Saturday July 1 around 1800 (6 pm), then taking the ferry the next morning from Piraeus to Naxos. We plan to do nothing in Athens but sleep. We'll probably take taxis from the airport to the hotel and from the hotel to the port, unless the hotel is within walking distance of one of them. Given all that: any recommendations for an inexpensive, conveniently located hotel with air conditioning? Thanks!
It might be worth loooking at the Dream Hotel.
We stayed there four years ago. I wouldn't want to spend a holiday there - it's in a street just off the port - but I think it would be fine for just a night.
If it was me though I'd catch the metro from the airport to Monastiraki (40 minutes), stay in the Attalos - https://www.attaloshotel.com/en/ - and then get the metro to Piraeus in the morning (25 minutes). That way you get to see the Acropolis, if only briefly, and have good options to eat.
Another option would be to spend the night at a B&B near the airport, then travel to the port the next morning.
We love the St. Thomas B&B. On our first stay with them, they picked us up at the airport around 6 pm and drove us a few minutes to the B&B. There we enjoyed an ouzo by the pool, then walked down the street to a taverna for a lovely meal, then had a great night's sleep. Very relaxing, no hassles, very welcome after the long flight. We also stayed at the B&B our last night on that trip, for easy access to the airport the next morning.
They can help you arrange transfers to the port the next morning, either via metro or taxi.
One more choice would be the www.piraeusporthotel.com which claims to be 7-10 minutes walking from the port according to their website. Their prices appear to be quite reasonable.
After you land you can take the train from the airport into Athens and then the subway down to Piraeus from Athens. I can second Ed's recommendation of the Piraeus Port Hotel - we stayed there last April. It was clean and comfortable and about 15-20 minutes walk from the ferry.
Kevin K's plan requires riding on TWO crowded trains changing at a grungy station (Omonia) & keeping alert for Pickpockets. Not my thing, when I'm tired from a long journey (probably with at least one change en route) If you don't want to switch transport and stay alert, you can just walk out of the airport door and right at the Curb will be the X96 bus. Runs every 20-30 minutes, This is an express to Piraeus, right opposite the Metro terminal there. Takes 90 minutes in traffic, but by 6:30, the rush hour will be long over, so call it 70-75 minutes. Costs all of €6 -- €3 if you are over 65! U buy your ticket at a kiosk near the bus ... just be sure to "Punch" it in a pole-mounted box on the bus to "validate" -- an inspector can check, & unpunched = big fine. No one can get off/on enroute, so pickpocketing is zero. Your big luggage is piled in a central "pen" inside the bus. You can just relax, sit and catnap all the way.