We had a wonderful time in Lisbon, and much of that was due to the great accommodations at Rua Augusta 213. It is truly in the heart of the city, right on a lively pedestrian walkway, and is only a few minutes walk from many of the major sights in the city. Before arriving, I thought that the street noise might be an issue because of the apartment's central location, but I was surprised how well insulated the windows were and the street noise was not an issue at all.
We took public transport from the airport and got off at Rossio Station, and it took a several minutes to figure out where we were going - although in retrospect, we could have asked any local resident or shopkeeper (most of whom speak English) where Rua Augusta was, and we could've been there in five minutes.
The apartment itself is a bit hidden (the entry is a single green door right on the street, between a pharmacy and a gelateria), but once you've been there one time it's easy to find. Liliana was there to greet us soon after we arrived and showed us to our apartment, which was on the second floor. The place was just as advertised - very clean, with modern kitchen appliances, including an oven, dishwasher, microwave, coffee maker, and refrigerator. There were two bedrooms, one of which has a window to the main street, and one more facing the back (which was very quiet); and two bathrooms, one of which had a very small shower and the other had a shower/bath combo which was larger. It also had a decent sized living room (which is open to the kitchen area) with a couch and a television. We were two people, and it was more than enough room for both of us - four people would be very comfortable here too.
Liliana was a great host, and answered all of our questions. She made herself available the whole time we were there, and it was obvious that she takes the comfort of her guests very seriously.
We had a great time in Lisbon, and much of our great experience we attribute to the wonderful accommodations at Rua Augusta 213. We would definitely stay there again, and highly recommend it to anyone who wants to visit Lisbon.