The Santos familie are the friendliest hosts one could encounter. They have a lovely apartment close to many of the popular places in Lisbon. Fully equiped kitchen, clean bathroom and large bedroom (not too much sunlight, but that keeps it cool in summer). A small courtyard to enjoy a glass of wine or breakfast outside.
Good restaurant, fruit shop and small supermarket around the corner. Not too much public transport reaching the place (only tram 28 which is always full), but the metro or bus stop is only a 10-15 walk away.