In the summertime, is there anything more tranquil than lounging by the pool, book in hand (and possibly a nice, refreshing drink in the other)? No, probably not.

At least not on Wednesday, anyway. If there's any day you're going to play hooky and head to one of the hotel pools open to the public this summer, make it June 26 next week. On that day, six of the hotels will donate a portion of the proceeds from the pool passes purchased to the Texas Book Festival.

Returning on Oct. 26 and 27 this year to the Texas Capitol and surrounding grounds, the festival announces a sneak of the author lineup at 8 a.m. on Wednesday and wants to celebrate this early look with the pool passes promotion. Did we mention that it also comes with a free book?

RELATED: 6 hotel pools in Austin with passes or free hours for locals to have fun in the sun

If you purchase a pass at one of the participating hotels — Austin Motel, East Austin Hotel, Hotel Ella, the Line Austin and the W Austin — you'll receive a complimentary copy of one of the books featured at the upcoming festival. You'll have to wait to find out what they will be, but a news release does note the books will be new or recent titles by presenting authors at this year's fest. As in the past, the Texas Book Fest is free to attend. 

Here are the details on each of the participating hotel pools.

Austin Motel, 1220 S. Congress Ave.: $20 day passes are available at the hotel front desk starting at 8 a.m. daily. You can also purchase the motel's Splash Cash card, $100, and redeem one of the available 10 swims from it on that day to participate in the Texas Book Fest swim.

East Austin Hotel, 1108 E. Sixth St.: The $25 day passes, which can be used 11 a.m. to 10 p.m. daily, include poolside food and drink service, complimentary WiFi and self-parking.

Hotel Ella, 1900 Rio Grande St.: The $25 day passes can be used 11 a.m. to 5 p.m. and include courtyard access, a towel, and valet parking

The Line Austin, 111 E. Cesar Chavez St.: The $25 day passes are available for purchase at the hotel front desk starting at 11 a.m. and include parking validation.

W Austin Hotel, 200 Lavaca St.: The $15 day passes can be used 11 a.m. to 9 p.m.