We stayed for 5 nights with our 2 children (4 and 8 years old). The apartment is sunny, bright and a great space in a wonderful location. It was very easy to get to the sights or get to transport from the apartment. There are steep stairs in the building and also hills to walk in the area but that was no problem for us at all. There is a supermarket close by and also a few fab cafes to grab coffee, take away pizza/dinner etc. We loved the Time Out Food Market which is only a 10 minute walk away. The kitchen was well equipped although we didn't do much cooking. Lisbon is a fabulous city with kids... our top tips would be the aquarium, the Belem area, a ride on the Tram into town and then a walk back through town and we visited the castle which was great. We had plenty of fun during our 5 days there... and we were lucky enough to have a amazing warm weather!