We as a group of three friends stayed in Jose's flat for almost four weeks. We arrived and left the apartment in late hours, but Jose was very flexible, so there was no problem to check in and check out. The flat was clean, kitchen well-equipped, beds big and comfortable. It is located in a very convenient location - close to Lisbon city centre and many attractions are within 30 minutes walk; grocery stores, restaurants and cafes are close too. One inconvenience would be the lavatory that was quite noisy after every flush. Also, the living room is a bit smaller than expected, judging by the photos.
Summing up, we really recommend choosing Jose's apartment while staying in Lisbon! :)