Sex with Home Exchange and Hospitality Exchangers does happen quite frequently. Exchanging hospitality is a great way to make new friends and this sometimes leads to sex. If you are traveling alone, be prepared for an offer. If you are both (all) open to the adventure, well, let nature take its course . . . safely. Be sure to bring your toys. Some countries leave few opportunities to purchase condoms and such things.
Making sexual contacts is not the intention of this service.