The apartment was conveniently located a short walk to the metro, tram and within 20 mins of the central part of the city and some of the main attractions like the castle. We stayed in Lisbon in early June, while it was 30 degrees (cel) outside the apartment was fitted with air conditioning and black-out blinds and stayed cool and comfortable. The bathroom and kitchen had all the necessities and is as described / shown in the listings. The balcony was also a plus, perfect for a sitting out at the end of the day. Communication from the host was on point and the key pad entry meant we didnt have to arrange meetings times to be let in but could get in as soon as we arrived.
The downsides would be the downstairs is a little dark, being on street level you cant open the black-outs without passers by looking in. The bedroom walls are also a bit thin, perhaps not the best if travelling with sharing with a couple. Additionally we travelled during a festival season (it was Portugal day during our stay), and there was live music stage close to the apartment with very loud music till 3-4am, which is something to be aware of if travelling in June. Otherwise a very nice apartment and recommended for a Lisbon break.