Ema and her colleague were very helpful prior to and upon our arrival. While I made the reservation, my parents-in-law were actually arriving first, and she had no trouble coordinating with them instead.
The apartment is located in the perfect location for sightseeing. We were able to easily walk everywhere or to a close-by train/metro station to get to places outside downtown Lisbon. The apartment is comfortable and updated and includes the basic necessities that you don't want to have to pack (toilet paper, and soap, hair dryer, etc...).