I spend 5 nights at Manuel's newly renovated flat located near Bairro Alto. Manuel is a great host and provided a welcoming gift, pasteis de nata from a nearby bakery. The flat is walking distance to many restaurants/bars and 5-7 mins to Baixa-Chiado metro stop. Keep in mind there's restaurants/bars around the corner the noise is quite loud at night with terrace door close reduces the noise level to 90-95%. I'm a heavy sleeper and didn't bother me as much. I highly recommend Manuel's flat and will stay there again if I ever returned to Lisbon.