My girlfriend and I stayed at Pedro's Sweet Cashmere apartment for four nights during our trip to Lisbon, and we could not have asked for a better host.
Pedro supplied us with detailed maps and suggestions on where to visit, most of which we managed to squeeze into our brief stay. The apartment was spacious and beautifully designed, and made our trip all the more enjoyable. The surrounding area was residential enough to make us feel totally at home, and yet its proximity to the various public transports available made getting in an out of central Lisbon a breeze. All in all, I can't recommend Pedro's place enough.