We had a fantastic stay at Pedro and Claudia's apartment. Carlos, Pedro's Dad who organised the keys was very welcoming. The flat is well located to walk to all of the great sights in Lisbon. One word of warning though, the stairs to the flat aren't for the faint hearted (super steep) or those with huge amounts of luggage. The flat is worth the climb - it's cosy and feels like a little home away from home.