Elena's place is a perfect place to stay in the old town Alfama, the view is really amazing as in the pictures and the flat is nice and cosy (we were there in February). Loads of the city is walkable (be prepared for massive hills) or the trams, it's great to explore from this place. We found some great food in Lisbon, a place called the food temple was really good nearby vegetarian food. Would really recommend for a trip.