We had flat 0 which is ground floor. We appreciate not having to climb stairs with our luggage. The entire block belongs to the same family so the place is safe, quiet and very clean. It's in a very good location as the bus stops and tourist tram stop are less than 8 minutes away. Even nearer to the flat is a small local cafe. About 5 minutes down is a corner fruit shop with a big selection of seasonal fruits. Before the fruit shop is a small shop that sells cigarettes, knick knacks and bus tickets. If you are sightseeing for a few days, get the green Viva bus card (down-payment of 50c) from there and top up with €5. Each trip is €1.40 with multiple free transfers within the hour. The Citymapper app is very accurate for Lisbon.
Even when we went back close to midnight, after going for Fado music, the streets still felt safe to walk down.
The flat itself had all the mod cons and delicious free coffee. Laundry washed and hung dried within a day. Very useful as the weather is so hot. Lisbon is simply beautiful. Stay longer.
We highly recommend this flat.