We (three people) stayed at the apartment for 5 nights. The area is very nice (clean, not too busy, and with lots of restaurants and cafes around) and it is very easy to get to the Metro (Rato station) and therefore everywhere in Lisbon! Samuel was very helpful and replied to all our queries immediately, check in was so easy and we could even choose the time of our checkout, which was incredibly convenient!
The apartment itself is very tastefully decorated and has lovely high ceilings! The bathroom had a wonderful walk-in shower and the beds were very comfortable. The kitchen is equipped with all basic utensils - however a couple more things (such as a toaster, cafetiere, kettle and (this we felt the most) second and bigger chopping board) would come in really handy (we do love to cook and being vegan/vegetarian we probably relied on the kitchen a little more heavily)! Some more storage space for clothes would also be appreciated, to stop the wonderful place from looking a little messy (there were no wardrobes).
Overall it's a lovely apartment, maybe a little more suitable for two than three people, but so charming and welcoming that we would definitely consider coming back to it.