Great location as mentioned in the advert - train station in front of you (for Sintra or south), metro station 7 mins walk, airport 5 mins taxi.
Nice, cozy place - perfect for individual or couple.
Fantastic range of amenities: in the bathroom and kitchen especially; soaps, gels, sprays, etc. in the former and lots of utensils, cutlery, and basic food items in the latter.
Macerator toilet is quite noisy and pipe system means that water is slow in draining in shower. Pump system also creates slight odors at times. These are not so significant things, though.
WiFi was slightly temperamental during our stay. Good enough for casual browsing generally.
Electricity seems to be on a low rate so only one of boiler, cooking hob, and microwave can be on at the same time otherwise electricity will trip.
Overall, great apartment that we'd recommend to all.