We were staying in Renata's flat in Lisbon for the whole February and we liked it a lot!
The apartment has excellent location: underground station is literary next door, there are food shops nearby which work till the late evening, historical centre is within 15 minutes underground ride, there are restaurants next door and shopping centre and a small city garden in 10 minutes walk. Besides, train station and airport are close as well, which makes going anywhere super easy.
The apartment itself is very nice and it has everything you may ever need :) The WiFi is good. If you're a fan of cooking, you certainly won't be disappointed. It will also suit for a big company (for the two of us it was quite spacious). And it also has a nice patio, so staying there is summer must be really cool as you can enjoy sunshine and meals outside.
Renata was very friendly and we had a very warm welcome!