For those planning to attend the 1984 Olympic Games in Los Angeles, the Southern California Bed and Breakfast Bureau is now taking reservations for visitors. Housing will be at a premium during the weeks of July 28 through Aug. 12, 1984, and many hotels are already booked at 80 percent capacity. The Bed and Breakfast Bureau offers a wide variety of private homes throughout the area, and these have been preinspected to ensure clean, comfortable rooms, friendly hosts, and affordable prices.
To contact the Bed and Breakfast Bureau send a stamped, self-addressed, legalsize envelope to one of the following reservation services:
* Bed and Breakfast of Los Angeles, 32127 Harborview Lane, Westlake Village, Calif. 91361, or telephone (213) 889-8870 or 889-7325.
* California Houseguests International, 6051 Lindley Avenue, No. 6, Tarzana, Calif. 91365, or call (213) 344-7878.
* Hospitality Plus Reservation Service, PO Box 388, San Juan Capistrano, Calif. 92693, or telephone (714) 496-7050.
* Eye Openers Bed and Breakfast, PO Box 694, Altadena, Calif. 91001, or call (213) 684-4428.
* Carolyn's Bed and Breakfast Homes, PO Box 84776, San Diego, Calif. 92138, or phone (619) 481-7662.
* Seaview Reservations Bed and Breakfast, PO Box 1355, Laguna Beach, Calif. 92652, or telephone (714) 494-8878.
For travelers visiting Paris, the Paris Sesame tourist ticket offers economical 2-, 4-, or 7-day passes on the extensive Metro system, plus scenic city buses, and regional express trains. The passes cost about $5, $8, and $13 respectively, which can be less expensive than multiple single rides at 70 cents each. For a brochure explaining the use of the tickets and a list of major sights and museums near key subway stops, write to the French Government Tourist Office, 610 Fifth Avenue, New York, N.Y. 10020, or telephone (212) 757-1125.
The Winterthur Museum and Gardens in Winterthur, Del., is offering a Winterthur in Autumn tour on the theme ''Cordial Negotiations: Benjamin Franklin and the Treaty of Paris.'' The tour celebrates the 200th anniversary of the signing of the document that ended the Revolutionary War. The exhibit also includes five elegant rooms that have been reset as they were when the museum first opened in 1951. A self-guided tour of the gardens and a tour of the Conservatory is also included in the autumn tour ticket.
The Winterthur in Autumn ticket is available Sept. 27 to Nov. 13 and costs $6 for adults; $4.50 for groups, senior citizens, and students over 16. Children under 12 are admitted free.
For reservations and information write or call Winterthur Museums and Gardens , Winterthur, Del. 19735, or telephone (302) 654-1548.
Great Himalayan Treks, first organized by Arlene Blum after her return from a 9-month trek across the Himalayas, is offering a Nepali-language trek from Jan. 7-29, 1984. The 15-day trip will be led by Mimi Church and Basu Manandhar, both fluent in Nepali. The trek will follow the ancient trade route between Katmandu and Pokhara. Daily instruction in basic Nepali-language will be given.
The trek goes primarily through inhabited areas and combines a beautiful, but relatively easy, route with opportunities to speak Nepali with Nepalese people.
The cost of the trip is $1,495 plus airfare. For more information, write to Great Himalayan Treks, c/o Mountain Travel Inc., 1398 Solano Avenue, Albany, Calif. 94706, or telephone (415) 527-8100.