Stayed in the Mosteiro 1 apartment. It is in a great location for getting around Lisbon. There was a very helpful booklet with helpful information about the apartment, restaurants, and other useful things. Ceu's description of the steep incline to get to the property is very true, but it is extremely steep! You should be aware that Uber drivers typically will not take you up the hill due to a very sharp hairpin turn. The bedrooms are very small and, as described, you must walk through one to get to the other. When we were there there was no drying rack for clothes, this may have been addressed now. We were there when it was absolutely necessary to have all windows open due to heat. We had an infestation of small flies. The owner has been notified of the problem and hopefully that has been addressed. We did not run into the flies anywhere else on our travels around Lisbon, so not sure what caused it.
IF the flies were not an issue and some minor items addressed (toilet seat that fits properly, the addition of drying rack, furnished coffee) I would stay here again.