No flights to SI any longer. Car rental, bus or hotel transfer (about $75 one way into SI town) is the only way. Lots of inexpensive accommodations right in town, as well as on the outskirts of town or in the neighboring villages. The more remote jungle lodges are generally more expensive but there are also some good bargains at some of those as well. For solo travel, I would recommend staying in or close to town. Lots of good restaurants, fun nightlife, great tours and adventures. Generally much less expensive than SP. Can leave SI by noon and be in SP by 3PM by bus & flight, or by dinner with bus & boat. Definitely worth spending some time there.