Flight
1 hour by BART (train) to the East Bay. Probably will have the most options for incoming flights. Great option if you want to stay in San Francisco!
Flight
30 minutes by BART to Berkeley. Shorter for areas in Oakland. Closest airport to where we live, though smaller so maybe not as many flight options. Southwest Airlines hub!
Hotel
We have a limited room block at Hotel Shattuck Plaza, a 4-star hotel centrally-located in downtown Berkeley next to a BART (the train) station. The cost is $219/night (+ tax) for a deluxe king room. In addition to hotel amenities, the reservation comes with an "All Access" pass to the Downtown Berkeley YMCA down the street. Please book through this link: https://reservations.travelclick.com/17233?groupID=2432856 We recommend booking early to guarantee a room as this is a popular hotel! The block rate is available until June 2, 2019. The dates we reserved are Thursday, July 18 - Saturday, July 20 (check out). However, if you wish to arrive earlier or stay longer, as long as there is availability, the group rate will be honored. Please call the hotel to do this.
Hotel
We also recommend taking a look at Airbnb for lodgings. We live in Berkeley, so you could look in that area. If you want to look elsewhere, we're happy to give you our opinion if we're familiar with the location.