Great location in Chiado, super central and very convenient yet still on a quiet street. We were met by Artur (Doron's co-host) who was kind enough to wait for us until midnight as our flight was delayed, and provided loads of advice on what to do in Lisbon, great guy.
The apartment is on a second floor walk-up and is renovated and nicely decorated. It is small but good enough for two people (nice sized & modern bath and kitchen), with the exception of the bedroom which is extremely small (just enough space for a bed but nothing else). It was fine as we were there just for a couple of nights, but I imagine a longer stay would get uncomfortable.
Overall we enjoyed our stay here, thanks Anton!