SJC Airport recently opened the new Club@SJC located across from Gate A-15 upstairs. Its a 3-5 minute walk to the WN Gates in the Federal Inspection Lounge. There are stairs going up as well as an elevator. Its open to Priority Pass, Lounge Club and a Daily fee is $35.
Open from 5:00 AM-10:00 PM.
http://www.theclubairportlounges.com/club-SJC.html
The amenities include a shower room, complimentary alcohol(beer wine spirits), snacks and non-alcoholic beverages along with free wifi.
I visited there in January and enjoyed it. They offer Campari, a good Cava Sparkling Wine, Martells and Courvaisser Cognac, Baileys Irish Creme local beers and wines. There are premium drinks available for purchase but who needs them as they offer a lot. There were beer bottles(one beer was from Morgan Hill). In addition they offer Tomato Juice, Orange and Grapefruit Juice as well. I really enjoyed this lounge.
There are comfortable leather chairs on the runway side of the lounge where you can see the tarmac action. I saw the Hawaiian Air leave from the gate and take off.
On the Terminal A Garage side there are couches, comfortable chairs and a long table where you can plug in your laptop.
The shower room was nice and had body wash, shampoo and conditioner.
All in all this is a great place to wait before a WN or a flight with another airline. There is a Flight Information Display Screen that shows all arrivals and departures so you know if your flight is on time.