A lovely, quiet flat, away from the centre of Lisbon (and any potential drunk tourists that could wake you up at 3am!).
You're only 15-20 minutes from the centre by public transport or taxi.
Top tips:
1. Skip the busy beaches of Cascais and head to Costa da Caparica for stunning views and more room to spread your towel.
2. Since you're in Belem, head to Pastéis de Belém later in the evening. It's a lot quieter and the perfect time to sip some port wine.