Location is great. Bairro do Rego is a great local experience and Luis is just a fantastic host who believes in the original airbnb spirit which is not easy to find anymore. He really cares for your stay and helps in everything needed and more. You can really count on him much more than I expected and he took as on a tour of Lisbon which made the experiences totally different. He is a great man, man of values and really helpful. Easy to talk to and ready to fix any problem if it exists.
House is really clean and well kept. Rooms are nice and you have everything needed. Toilets and bathroom are well taken care of and clean.
Only problem in the house is noise. As you probably know, Lisbon is one of the very few cities that has the airport right in the city, with advantages and disadvantages,and bairro do Rego is just in line with the entries of planes. So noise is bad; if you close windows is good enough because they are new and isolate very much, but then the heat doesn't let you sleep.
For the rest, I strongly recomend Luis' home stay.