Google TraductorNo they are not

Google TraductorYes the room we were in had a connecting door

Google TraductorWe visited in early January and the outdoor pool area was not set up for use, I assume the pool is not heated. They have a very nice indoor pool in the spa. I'd contact the hotel for activities although they do offer some outstanding, high-end dining. Staff is outstanding, you will enjoy your stay The resort is located close enough to the shore line to visit a beach and other attractions over looking the water. Like you, we were in Porto before Sintra and we stayed in Sintra at the end of our trip so we would be close to the airport. Sintra is within reach of Lisbon and many historical sites. I found UTube has some very helpful videos which gave us enough information to decide where to visit and offered some advice from those that travel more than I do. It also showed us what the local like which was great especially for food and drink. We had a rental car in Sinta and be aware that the roads are narrow and many are one way, makes it a little more challenging if you are not used to that type of driving. We tried to use trains or Uber as much as possible.

Google TraductorI personally absolutely recommend to stay in Penha Longa because you can see Sintra, it is only 30 km to Lisbon, to Cascais. There are many places to see if you stay in that gorgeous Penha Longa which by itself is in my list "must see" + "must feel". And I am sure that the hotel has top level concierge service which will help you to schedule your trips and sightseeing.

Google TraductorI know for sure that they have everything on top-level so I assume that the best surface for tennis they do have. Sorry for such an answer. But I know exactly for sure that the hotel is really top-level so everything is really of a highest quality there. Even cosmetics in the rooms was by Bulgary and coffee machine Nespresso.