We loved our stay at the library. It was a charming place with a lot of character-books in every corner! There were plenty of amenities in the apartment. Many other AirBnbs in Lisbon are run by property agencies and the amenities are sparse. The Library is clearly a well loved property. We were here in November during some rain and we stayed dry and warm thanks to the provided heater.
It was easy to get in and out of the area with either Uber, scooters or walking. It was just down the block from a fantastic coffee shop. We really enjoyed our stay and would easily come back. We are especially grateful for our host Joanna. She was easy to reach and helped communicate with when we needed help.
A couple of things to note. The elevator is slow and you cannot touch the walls as you go up. We worried about getting stuck, and it had no issues once we figured it out. Be sure to tap on the light as the stairwell is dark. Watch you head on the slanted ceiling.