We stayed in Gacas Place for a week. Communnication before arrival was easy and she arranged a car to pick us up free of charge from the airport which was a hudge plus. The appartment is on the 4 th floor and there was no lift but for us this wasn't a problem. The appartment was very clean and nicely renovated with an amazing views from all three windos. The kitchen was well equiped for basic cooking, only missing an oven. Graca provided us with tea and coffe for breakfast. The bathroom was small but very well equiped with shampoo, hairdrier etc. The water pressure in the shower was excellent. She had also provided us with extra towels that were really comfortable.
The appartment was really well situated in Alfama. The tram 28 goes just 5m away from the doorstep and there were coupple really good breakfast places nearby (Copenhagen coffelab for example). The tram makes some noise when it passes and it woke me up coupple of nights during our stay but the tram stops around 00 p.m. The bed was quite hard (some kind of a futon maybe?) but for us it wasn't a problem since we have a hard bed at home aswell.
For someone staying in Lisbon I would deffinitely recommend Gracas Place. Our stay was deffinitely one of the best airb'n'b stays I've had during my travels.