Helena's place was an absolutely perfectly base for us in Lisbon. We were travelling as a family of four- myself, my wife, our 3 year old son and our 7 month old daughter. The apartment was easily large enough to accommodate all of us and could probably have taken a few more people! Helena kindly provided a travel cot for our baby as well. The pictures do not do it justice at all- it's much larger than it looks with very high ceilings and amazing decorations.
Location wise you are right on the border of Alfama district, within 5 minutes walk of Rossio metro station and all the main attractions you would want to see in Lisbon are all within walking distance or a short train/tram. We ended up walking about 20 miles over 4 days (No exaggeration!) and it was absolutely perfect to return to the beautiful apartment at the end of each day with very tired feet.
Thank you Helena for your excellent hospitality and for making us feel so welcome. We look forward to returning again in the future.