We stayed at Isabelle's apartment a week in October'16 and this is to confirm: Isabelle is a super host!
Her place is even prettier than on the pictures. Very comfortable, very clean (after 3 days of our staying Isabelle sent in the cleaner to change the towels and fresh up everything. Being very delicate our Host discussed with us this visit beforehand) with your every possible need being anticipated. From your welcome cocktail to the next morning breakfast; transport carts and travel guides; detailed cards of Lisbon districts; first aid kit and fire extinguisher, hair dryer; cooler fan and heaters... you'll been covered in every possible situation. But the main thing is The Book: the Guide, written by Isabelle. Make sure to read it very carefully and follow every recommendation: where to eat, where to drink, where to go for fado, where to see the most beautiful sunset in the city. Isabelle very patiently will answer all your questions and help with booking or reservations if you need.
The area itself is fantastic: it's right in the center of the city so you can get anywhere by foot or by tram (the stop of the legendary #28 is 5 minutes walk), or by metro (5-7 min walk), or by train and by ferry (10-15 min walk).
And the sound of the Conservatory students playing in the morning as a wake-up call is absolutely charming.
Highly recommend, rua Caetanos 40: the place to stay and enjoy Lisbon.