Lisbon Lodging/Night Train

Hello. This summer my adult son and I will be in Spain and Portugal in August. We plan to ride the overnight train from Madrid to Lisbon, then spend two days (one night) in Lisbon and return to Madrid on the overnight train.
1-How do I make reservations to get a sleeping compartment on the night train from Madrid to Lisbon?
2-Any suggestions for lodging for one night in Lisbon? Thanks!

Lynne804 writes: Go to the Renfe Office in Madrid's Aeropuerto de Barajas when you arrive. As you come out of the International arrivals area, they're to your right about 50m just past the escalator. They acccept credit cards.
Lisbon lodging: e-mail my friend Carlos Ferreira at Restrela@esoterica.pt Centrally located, clean, comfortable and cheap!
IMHO
If it was me, I wouldn't book that overnight Lusitania Express train until I had first 'checked out' what kind of specials Spanair was running. Sometimes they are cheaper than the train.

Also check out www.europebyair.com . The most it should cost you is $198 each round trip, and maybe less. And if you pay with American Express, it's 10% cheaper. But, 2 nights in Lisbon is not nearly enough!! You don't say how much time you have, but you simply must go to Sintra, which is an easy day trip from Lisbon. (See Sintra even if you don't have more than 2 days). Sintra will be a highlight of any Spain/Portugal trip. They have amazing castles and Palaces there--and a beautiful town.