I assume you will be looking for a 2 rooms apartment. House prices have sky rocketed in the last year or 2, so now a 2 rooms apartment near downtown will cost you 1000. A family of 3 with that income is not very much... A couple both earning the minimum wage get 1200 per month so you can't ask for a good life style. I would suggest locations outside the city like Gaia, Maia, Valongo, Vila do Conde, Gondomar, Paredes, Penafiel. You can look them up in the map to see the distances to downtown. Some of them have good public transportation to the city center like metro and train. Do you already have an idea where will you be working? Maybe that can help you choose a location to live.