Daniel's place is very beautiful with elegant and thoughtful touches. After reading reviews from other guests and seeing photos of the chalet, I made sure to make this a stop on my trip to Portugal.
That being said, the chalet itself is smaller than it appears in photos and not exactly in the location I envisioned. Sintra itself is described as the "Capital of Portugal's Romanticism" but I was honestly a bit let down by what it had to offer. I imagined it to be much more wooded and remote, but its really very close to the train station and other unromantic reminders of the drag of city life.
There is a great restaurant "Incomum" nearby if you do plan to stay there -- very highly rated and equally hard to get a reservation. We ended up not wanting to have a 2-3 hour pricey meal, so we grabbed a pizza from the Pizza Hut down the street -- very hilarious dinner to have in the "most romantic" place in Portugal.
Sintra's attractions themselves are incredibly touristy and although the town is sleepy and quiet at night it comes alive with thousands of tourists during the day. There are many different ways to get around -- we did a 15 Euro hop on / hop off tour, which ended up mostly being worth it? Minus the wait times for the bus itself, and the crowds at the two attractions we went to (Pena Palace was much more popular than Quinta da Regaleira).
All in all Daniel's place was lovely and I still highly rate it, but I'm not sure I would make Sintra a stop on my next trip. Very over crowded with tourists and not the romantic city I envisioned.