We spent a great time at Helena's.The house is cosy and beautiful, very clean as well. The location is really in the center yet it is very quiet when in the house (i was surprised by the quietness compared to what i had heard about Portugal). Perfect!! Of course that is a safe area and there are plenty of delicious restaurants nearby (especially on the road to the castle). I recommend it strongly and will come back when in Lisbon! Thank you for a perfect stay ;)