Diogo's place is a good located economic choice.
The flat is beautiful, clean, and renovated, has the essentials for a short trip to Lisbon.
Downtown is literally at the entrance with a lot of nice restaurants, sightseeing places with walking distance, and the seaside just 10 minutes away.
The flat is equipped with the essentials and you'll have two towels for each and shampoo.
The listing is managed by a hosting company so don't expect the average Airbnb experience, tho the guys will help you get along.