Helena is a truly great host. The only regret I have is that I haven't met her personally. But even this way, "virtual" Helena was always trying to make our stay more pleasant, starting from good hints, to preparing apartment for our specific needs (family traveling with small kids). We had a lovely stay there, apartment is spacious, bright-colored, and very close to main squares and transportation points (Rossio and Martim Moniz train station and metro, two bus stops nearby; even then we were mostly walking since there are many interesting places along the way and position of the apartment allowed that approach). The only downside is steep hill (50-ish meters from Rua da Palma to our street) and lack of elevator (but it honestly wasn't such a big problem for us: there's space to leave the stroller in the lobby, and steps are kids friendly as they can be; on the other hand, I have to mention we are used to this and didn't mind some extra training ;) but it can be a problem for some people). Helena sent us some ideas on what to see and some local events. She also let us use the apartment until it was time to head to the airport since she didn't have guests that day, and ordered us a taxi. To summarize, it was a great stay and we enjoyed Lisbon very much!