I believe you will not find a better location to stay in Lisbon. Just a few meters from the train station and the subway, it's also near a very good Pingo Doce supermarket.
It's true there is a lot of people walking and talking on the street in front of the windows, but the noise is not really bad.
The space in the apartment is wonderful, perfect to hang out and cook meals with the family.
The washing machine works well and you can hang your clothes outside, like the locals do everywhere in town.
Carlos is just an AMAZING host, very kind and polite. He will assist you with everything you need. We strongly recommend this property!