Mateu's place is really great if you are visiting the Montjuc area (museum's etc) and for a lone female traveller I felt very safe there as it is well located and he was very hospitable, the room was very clean and comfortable and they let guests use other shared areas if you need to cook etc - I went out for a great supper in a local restaurant just across the road and found it all very easily as it is easy to get to the bus-stop for the airport and I also walked there easily from Barcelona Sants. Everything was great and comfortable.