We had a wonderful stay at Chiho & Nuno's. The place is beautiful, clean and in a great location - close to lots of great restaurants as well as the water and trams. Laura, who checked us in, was very kind and made the process easy.
The book of recommendations was an amazing feature and the apartment had everything you'd need for a short or long stay. Highly recommend! I would book the same apartment again when coming back to Lisbon.