It was great to stay at Luis's place. The appartment is in the middle of the old Alfama, which is home to a lot of traditional shops, cafés and locals. Because the appartment is only reachable by stairs, there are no cars and hence no noise at all. The only thing you hear at night, if listening well, is some fado singers around the corner.
Everything in the appartment is excactly as showed on the pictures. Luis is a great host. He met us at a square nearby, at 10pm, and walked us to the appartment, carrying all our luggage. He was very helpfull and easy to reach using WhatsApp.
The appartment and neighbourhood are great when travelling with a toddler, although it's is impossible to use a pram in this area of Lisbon/