We stayed 14 days. The place is excellent. The interior is very new and tastefully decorated. The kitchen is fully equipped has everything you need - we cooked at home a lot! The balcony view to a park trees is lovely.
The location is about 5-6 min walking to the Carcavelos beach, about 10 min to the Carcavelos train station (30 min to central Lisbon or 15min to Cascais). Taxi from the airport was around 35 euros.
The communication with the owner was very easy. Check in and checkout was seamless.