We had a lovely time in Cascais at Joana's place. Communication and check-in and check-out was very easy.
Location was perfect - right in the centre of Cascais and easy access to the restaurants in town, the beach and trains to Lisbon. Well-equipped kitchen and amazing terrace to enjoy some drinks and meals. Wifi worked well.
The flat may not be ideal for less mobile visitors with the multi-levels inside the flat.
Parking in Cascais isn't the easiest, but Joana provided good advice.