We had such a great stay at Ricardo's place with our 10 month old baby. The location is great - so close to the biggest attractions in Belem including Jeronimos monastery, the cultural centre (with Berado collection) and of course Pasteis de Belem which is so close you can go first thing and get there before anyone else :)
Transport links are excellent - we found that the bus was the quickest and quietest way to the centre but there is also the train and tram and Ricardo left very helpful directions to all three. We got the train to Cascais during our visit which was straight forward.
There are good supermarkets within short walking distance and some good restaurant options too - recommend Taberna dos Ferreirios.
The house was really comfortable, clean and stylish and Ricardo helpfully provided and cot and baby bath for us. Lovely outside space for lunches in the sun. Highly recommend a stay at Ricardo's!