We stayed for 3 days in Cascais in this wonderful and amazing tennis house! The walking distance to Cascais is okay. It's about 15 to 20 minutes and you can walk close to the sea. The house itself was great! We really felt comfortable and would come again if we visit Cascais. It's really close (5min) to Boca do Inferno. We did one day a trip to Sintra with the bus (line 403) it's a really long trip about 1h (instead you can take Uber) but the trip was over Capo the Roca, which you need to see. The apartment itself with the garden and the great tennis court is absolutely special. I've never seen an Airbnb like this. We felt so comfortable and at home. In summary it was the best we could ever do! Thank you to Tomas to this great opportunity to stay there in Cascais.