Maria's house is a lovely spacious house. It's decorated with lots of artistic pieces which makes it interesting. It was lovely and cool in the house and the area is quiet. The house benefits from shutters so not only is it quiet at night it is very dark, making it a restful space to sleep in. We had everything we needed, plenty of bed linen towels etc. an efficient washing machine, dish washer and fridge. The garden and patio were great, good for BBQs and for relaxing in the evening after a full day out sight seeing.
It's an older property so there are the usual issues with less than powerful showers, front door and garden gate having their own idiosyncrasies etc. Once we got the knack all was fine. We loved the characterful nature of the house, though if you want a modern beautifully decorated house this one isn't for you.
Sao Pedro do Estoril is convenient for Lisbon (25 mins on the train) and the trains are frequent and run until late at night. Also nearby is Cascais (about 10 mins on train). It's an 8 minute walk to the train station and about 15 min walk to nearest beach. All nearby beaches are great and we would recommend any of them - we liked Guincho for wild unspoiled beauty and Estoril for swimming. Sintra is a 30 minute drive away, which makes day trips there easy. Location for us was great: city, beaches and nightlife all nearby - not much actually in Sao Pedro itself, which wasn't an issue for us.
We had a fabulous holiday with our family, the house has plenty of bathrooms and is large enough to accommodate quite a few people easily - location was perfect for our needs. Would recommend :-)