This studio apartment is good for a couple of nights in Lisbon and is well located for exploring Alfama and the downtown regions (be aware that you will always have to climb back up to it though!).
Communication with the hosts was OK but quite slow.
The room is comfortable but the only thing I would say to be aware of is that it is very noisy both from the upstairs apartment and the street when anything drives by or someone walks past. There is a slight gap under the window which means the sound is not blocked out - this woke us up several times in the night and early in the mornings.
We had an issue with the shower not draining properly but did not hear back from the hosts about this.
All in all, you are unlikely to get somewhere in such a good location for the same price!