I enjoyed two nights in this tiny house by my own, and think it is a great deal in Lissabon.
After travelling and eating out for a week, i enjoyed cooking for myself there and found the kitchen to be very well equipped, which really surprised me, given the limited space. There is no oven, but a microwave with grill function ;-)
The house was cleaned well and everything was there, from fresh towels to warm blankets for the cool nights.
The house is in a quiet area (although there is a rooster in the neighboorhood which seemed to require a lot of notification...but this ist not the hosts fault ;-) ) which i enjoyed. It is in the approaching flight path to the airport, but this is very common in Lisbon, i did not have a problem with it.
The communication with living was excellent, he seems to be a really nice guy, and the checkin was as easy as it could be.
Just a warning for tall persons like me: Don´t be inattentive when walking to/from the kitchen, there is a narrow archway...just pay attention ;-)