Rui's place was nice to stay in, it's really clean, spacious, and stylish just as it appears in the pictures. The bed and sofa are comfy and the shower is great with plenty of hot water.
Our flight arrived fairly late in the evening but Rui was happy to welcome us and show us around his lovely apartment.
It is very close to the metro and it's also easy to walk to the centre (Lisbon is really safe so there are no problems walking around in the evening). Within 10-15 minutes walk there are plenty of shops, cafes, and restaurants.
There's no lift in the building so you'll have to walk up a few stairs - not a problem for us but useful to know if you struggle with mobility.