This is honestly my favourite airbnb I've ever stayed in. I stayed here with my boyfriend in October last year and booked the same space for me and 4 friends this July.
It only takes a 25 minute walk in to the centre / cais de sodre or Time Out Market so you're still in a great location but a slightly quieter area and with garden. Having a big table to have breakfast at before heading out in to Lisbon for the day and an outdoor space with hammock and deck chairs to lounge in after a day in Cascais is perfect. The bed is also one of the comfiest (and biggest).
Super easy check in and out with key safe etc.
Just couldn't recommend it enough and will come back again. Thank you!