Would definitely recommend Mafalda’s place! I didn’t realise while booking that it’s quite far from downtown Lisbon but that’s not an issue since there is a tram, train and bus stop right round the corner. The Belem area itself is much quieter and less crowded which I quite liked. The apartment itself is as described and Mafalda is very responsive and even helped organise a taxi for me as my flight was early morning and public transport doesn’t run then.