The house is nice, and clean. Water and wine are on the kitchen table. Beds were comfortable, and the location is great - central to sights and things to do.
Would advise future guests that there is no central heat - the living room and master have wall units. The one in the master has low airflow due to a box that is built around it (a coat hanger can be used to prop the box door open and get slightly more airflow, but not a lot). The second bedroom has no heat, nor does the bathroom.
The hosts are very inflexible at any turn. A couple simple requests were met with an almost automated no, and every message, even when just a simple "yes" or "no" was required, started and ended with "we hope you are enjoying your stay" type language which feels cold and impersonal.
We also received pushback from the hosts about getting the check in info even though we arrived a day late, and the place was "ours".
I would find different lodging next time. Plenty of nicer AirBnBs in Lisbon for less.