The flat was really tidy when we arrived and everything looked like shown in the description/pictured. The flat gets really cold during the winter but a small heater is provided.
The location made it easy to commute to central Lisbon as it's a 5-10mins walk from Santa Apolonia station. You'll also find a supermarket (PinguDoce) there. There are quite a few hills in that area so you should have a decent pair of shoes to walk around. I wore sneakers all the time !
Though we didn't get a chance to meet Mariana nor Luis, they provided us with useful information to make our stay as pleasant as possible !