We didn't notice any noise from the building works during the night and we were out for most of the daylight hours. Our min critism of the hotel was the lack of a bar (or social meeting place to converse with other hotel guest and the total lack of any concession to western tastes on the evening food menu.
We also never heard about PSB. No one asked for our documents in China, except for hotels, trains and airplanes. There was no problem with this at all.
P.S. maybe travel company has some information about it.
I just googled it. Also it was on multiple booking sites.
Be aware that there is an issue finding it and be sure to have instructions in Chinese (this only helps if taxi driver can read...).
The Buddha Zen and the Wenshu Monastery are very close to each other and the whole area is lovely for exploring by foot. The Wenshu temple is free. The vegetarian restaurant next to the monastery is very good, but go to the upstairs part (on the first floor) not the self serve downstairs. The area around the restaurant has tea and coffee houses, music and a weekend market.
The Wuhou Temple, Jinli Street and the Tibetan area are all really close to each to each other. Can't remember the entrance fee to Wuhou but you should be able to find it online. Remember to check for concessions as they can be generous to seniors, children etc. Jinli street is next door and very very very touristy. Tibetan area is further up the road from the Monastery - just carry on walking up the road with the Monastery on your right - you will start to see some Tibetan restaurants on the left hand side after about 5 minutes walking. Cross over and start exploring the long street diagonally on the left behind the restuarants. Entirely Tibetan, not touristy, full of monks. I don't think there were any metro stops near Wuhou - we walked for about a mile from the nearest one. Taxis were not very expensive. Reception at Buddha Zen can help with maps and info and call a taxi.
People's Park has a metro stop. Metro is very safe and easy to use, all the signs are in English. Your bags will be scanned on the way in and water bottles are checked separately. It's a great way to explore Chengdu.
We travelled by metro all over the town. The metro stop is about 5 minutes walk from Buddha Zen. Older people on the streets tend not to speak English but most of the teenagers do and can't wait to practice. They are really helpful if you get lost. In fact if you stop and get out a map, someone will also stop and try and help.
Hope you are going to see the pandas too!
Have a wonderful time, smile a lot and prepare to pose for photos with Chinese people as they are fascinated by us!