Waking-up in the morning to the amazing views of Estoril-Cascais beach front, makes all the difference. 3 minutes walk will take you down to the water-front for a stroll, breakfast, lunch or dinner in one of the many cafe/restaurants. The water-front is an all-season delight, and you are practically there. Apartment is delightful and amazingly well-equipped. Lina is a gracious host and highly accommodating.
3rd floor with no elevator has to be noted. Street parking looks like it might be a problem, but proved to be very easy and simple, mainly because of a large lot, empty at nights 3 minutes away (paid parking after 9AM, but free all night).
Proximity to the railway lines proved to be a no-issue because of the very good insulation of the windows (double-double system). I am a light sleeper and was never disturbed by train or traffic noises.
Excellent choice all around!