The Aston Waikiki Beachside Hotel is planning to begin a $20.5 million renovation next summer, according to public records. The hotel at 2452 Kalakaua Ave. has announced it will not take reservations following June 30, when it will close for renovations. All guests will check out July 1, according to a spokesman. A representative from the hotel's owner, Kowa Waikiki LLC, declined to comment. The 12-story hotel was built in 1966. According to a building permit application filed on Thursday with...