I would highly recommend this apartment for a short stay in Lisbon. Although being quite small, it is perfect for a couple/lone traveler spending a few nights exploring the city. The location is great, it's down a quiet street that's not too high up and you have a great view of the castle. The bed was also comfortable and has a fan/heater if you need it.
The host, Maria, was extremely accommodating and easy to communicate with. We had to change the dates of our trip last minute and she was more than happy to do that for us. She also gave us some great recommendations for places to see, eat and drink which was very helpful.
One thing that could be improved would be to put a bracket to hold the shower head up and somewhere to store your products in the shower as it can be a bit of a juggling act.