We were welcomed in the flat by a member of Albertino's team. Everything was expalined to us. The flat was clean. Albertino is a reliable host. He deals with any issue quickly and efficiently. The communication is easy and fast.
This flat is very very well located in Lisbon. Simple to go anywhere with public transportation, buses right there. Principe Real is a very nice neiborghood with plenty of things and restaurants to discover, very central.
There is traffic in the streets and it can be a little noisy at times.
I recommend Albertino as a host and this flat to visit Lisbon, unless you need a very quite place to sleep.