Convenient hotel close to the airport (8 min train ride, 3 min taxi). Close to the train station and grocery store (both, 10 min walk). Modern with a comfortable bed and pillows, but a small bathroom (may be inconvenient for taller people with longer knees). Decent breakfast (about $13 USD) with delicious bread, cold cut meats, cheeses, pastries, dairy/yogurt, boiled eggs, fruit, etc (did not have cooked meat, however). In the evening, the lobby smelled like cigarette smoke because people were smoking right outside the sliding doors. There's a fee for luggage storage $2 for smaller locker ($5 for a larger locker). Worth it, but this was the only hotel that charged this fee out of all the hotels I stayed at. Helpful front desk service. No housekeeping used. Would stay here again if I need a hotel close to the airport. Fairly quiet. Stayed here in the Fall, so can't comment on the lack of air conditioning.
Note, trains come every 20 minutes, so even if it's close to the airpot, you may have to keep this in mind. Also, it's not as pedestrian friendly to cross the street to the train station so be careful.