We loved staying at the Blue House! This apartment was comfy, clean, big, so incredibly centrally located, and most importantly the hosts are fantastic (special thanks to Tony!). The location was prime to walk to many places in Lisbon. Communication was great prior to arrival and the check-in process was very easy. The view from the balcony of the tram and streets below was an added bonus. It was also true that although the street is lively at night, the windows protect against the sound quite a lot. So unless you're a super light sleeper, you should be able to abstract from the sounds. I would recommend a stay here to anyone heading to Lisbon!