In Lisbon you will find many cheap hotels. We recommend:
GuestReady - Flat w/ Garage near S. Jorge Castle Renovated Apart with Private Courtyard, By TimeCooler Av. da Liberdade comfortable apt with balcony The Blue House - Lively Bairro Alto Water and Sun Studio
Looking for hotels rated as excellent by guests? Here are the recommended properties:
Mouraria - Apartamento 63 Lettér Sanches Apartments Hotel 3K Europa Aqueduct Apartment VL Sunny Green Terrace
Portugal Hotels — Aparthotel Navigator Luxury apartment with free use of pool, gym and spa Apartamento Garrano - Casas Barca do Rio by Gerês Casas
Hotels of the world — Oceania House Hotel 4 The Mews La Maison Hotel Doha
More destinations — Fontvieille hotels Dogana hotels El Porvenir hotels