We have rented the house for 4 weeks and I might say, it is suitable for a long-term rent. The location couldn’t be better — you live in the historical center of Cascais where you have everything in a 2-minute walk: an adorable park with playgrounds, restaurants, a boardwalk, a Mall, a small kiosk with everyday stuff. The only downside — there is no parking near the house. You have to find paid parking on the streets nearby. The house itself is spacious and clean, with all kitchen amenities in place. Furniture in the living room is a bit old and smelly, but in general is fine. It was getting colder outside, but we used electric heaters for extra comfort in bedrooms.
However, our vacation was almost ruined by construction works in the neighboring house. Could you imagine a house with no inside walls and no roof — so it was the house which shares the same walls as our bedrooms. The noise was horrible — drilling and hammering from 9 am until 5pm almost every day. We have 2 kids 4 & 3 years old, and it was impossible for them to have a daily nap. No one in our family could have a quiet time our during the day, sometimes even on Saturdays.
We were deeply disappointed when the owner (a company which leases the apartment) just answered «we are very sorry» to our complaints: they neither talked to the workers to stop noise at least for a couple of hours during the midday, nor offered us a discount or an opportunity to move to other place, not even a cleaning service as an excuse. Nothing. We had to write a claim to Airbnb and only then they made a one night refund (out of 1 month rent). They confirmed that they were aware of the construction works beforehand but did not note it in the listing. So, I suggest you should double-check with them before your booking.