Rui's place is amazing. It is a great small guest house attached to this beautiful 17th century historical house. It has a great lounge/dinner room, good size kitchen with everything you need. We used just the main bedroom, which is great. One of the best parts of the place is the small patio, awesome for an afternoon drink. Another great feature is the private parking, specially in Lisbon where parking can be tricky.
The locations is great Right outside you two small supermarket where you can find fresh fruits and vegetables, along with all sorts of staples. Also, it is located between the city center and the beaches, which is great if that is what you are looking for.
I have to say that Rui is an amazing host. Very polite, friendly and helpful. He's always available to help with some great tips on where to visit, eat and see. He makes it even easier by giving his WhatsApp for that.
I traveled with my wife and our 1 year old and we had a great time. When we come back to Lisbon, we'll definitely staying there again. I can't recommend this place enough.