The location is great to explore Lisbon on foot - a 15 minute walk takes you right to the center (Praça do comércio). The apartment is also close to the 28E which is the most famous tram line.
The studio is fairly spacious, nice bathroom, kitchen looked fine as well but we didn’t cook. Check in was seamless with the provided codes. The only thing I can complain about is that the faucet in the bathroom needs to be fixed. It was usable but I would expect it not to be broken.