The apartment was great, exactly as described by Cristina. It had everything you could possibly need for a comfortable stay. The apartment was in a quiet neighbourhood but very close to the city centre and all the main attractions.
Cristina was very kind and responsive. She waited for us at the exact time we previously agreed and she constantly enquired if we were ok and if we needed anything else. She provided us with some great tips in order to have a great stay in Lisbon: from bars with an incredible view of the city to restaurants and places to visit. I can definitely say that when we will visit again Lisbon (and we sure will) Casa do Azulejo will be our first choice.