Cozy flat, may feel crowed for 4 people, and definitely no space for big/bulky suitcases!
However, it is very well located to the metro (Martin Moritz) and Tram 28-however, we just walked everywhere!
The interesting part of the Moureria neighbourhood is on the other side of the tram rails. (Do not miss it! We felt it more authentic than Alfama!) The flat's building area felt a little bit shadier and may be a little intimidating for single women, but we never felt unsafe. For this, my recommendation would be to get to the flat up the tram road and then turn into the flat street, vs going via google maps shortest route from the Metro station.
Superb hosts, accommodating to our schedules and hassle free check in and check out. Would definitely book again!