My wife and I both work remotely and this location was great for that. The internet speed was decent enough for 3 people to be working online with video conferencing too. Ricardo was a great host and was very responsive to all our questions and needs. Would definitely recommend this to anyone wanting to stay long term :)
One minor thing is that at nights SOMETIMES (not always), there are a number of loud people partying and yelling which is pretty normal in Lisbon. It didn't bother us too much as we would usually go out at nights, but it could definitely be heard from inside the apartment. Again, it's not Ricardo's fault at all, but a good warning for others.