We were three girls on vacations who wanted to visit Lisbon at a fair price. The house itself is located a bit outside of the centre of Lisbon, but you can reach it with a 10/15 minutes bus journey.
At our check-in the staff was very helpful and kind: they gave us the basic information (eg. supermarkets, beaches and transport) and they were always available (they answered quickly to our messages and requests).
We definitely recommend it for those who would like to stay in Lisbon at a reasonable price.