Re: Tivoli Avenida Liberdade vs Four seasons
Tivoli's location is better but Ritz is in a class of its own.
Re: Areas to avoid in Lisbon
Lisbon is an extremely safe city (just mind the pickpockets specially on very touristy places like tram 28).
Re: Lisbon movies
Cine-Estúdio 222 at R. Praia da Vitória used to have them on weekends. Not anymore I think...
Re: Porto to Lisbon by train
Santa Apolónia since you will not have to change lines as in Oriente: https://www.metrolisboa.pt/en/travel/diagrams-and-maps/