Portugal remains one of Western Europe's most affordable destinations. Budget travelers can manage €45-65/day: hostels in Lisbon and Porto run €15-25, a prato do dia (daily lunch special) costs €7-10 with wine, and metro and bus systems are excellent value.
Mid-range travelers (€90-130/day) stay comfortably in good hotels and eat well throughout. Intercity buses (Rede Expressos) are cheap and reliable; the Lisboa-Porto train takes about 3 hours. The Lisboa Card covers museums and public transport with significant savings.