Amazing location right near the train station, with easy access to transportation around Sintra (we did the hop on hop off bus, which worked well enough for us as we didn't have a car but the schedule wasn't always ideal).
The hosts were unable to greet us personally as they were away, but they were proactive in their communications, gave us emergency contact details for their friend who we could call if we needed immediate assistance, and check in was VERY easy with a lockbox. They even gave us a recommendation for a restaurant in Porto when I mentioned we were going there first!
The flat was clean and the beds were nice and comfortable, which was great after a day of walking all the hills. The only comment is that the flat was a bit damp smelling but I think that’s just winter in Sintra as most places do not have central heating (though there were portable heaters that work OK and a fireplace which we didn’t test, but was stocked with wood in case we wanted to).
Overall a great stay and welcoming hosts.