The apartment is lovely - you can feel the whole building has just gone the complete good quality renovation. The location is very good - close proximity to many attractions, including São Jorge Castle, Praça do Comércio, Cais do Sodré (for the nightlife) etc. Erina and her daughter Ana were very helpful upon our arrival, gave us good briefing on the basics.
The only downside I could think of is 1 bathroom with the only WC for 4-6 people - may become a bottleneck in the morning ;) Anyway we did it with the friends who spend a lot of time in there and should not be such a big trouble for most.
I your about to visit Lisbon and want to stay in the center of it - this is the place!