The apartment is great. Exactly as announced. We enjoyed very much the balcony, with great views of Lisbon's castle. Kitchen is fully equipped and coach and bed are comfy. Only one (small) criticism: there is no heating whatsoever and Lisbon can be chilly at night in the winter. We repeatedly texted the host asking for a heater but he never replied. I figure they are managing quite a few places and they just missed the messages, so here is a friendly reminder to check the inbox every now and then.
Apart from that, we enjoyed very much the apartment and had a great time in Lisbon.