We stayed at Sheila's on the recommendation of my daughter who had stayed with her previously. The apartment is on the ground floor, it's spacious, warm and welcoming. Sheila met us when we first arrived and showed us round. She had kindly left Irish teabags as she remembered from my daughter where I was from....much appreciated. There were fresh flowers in a vase, orange juice and milk in the fridge, and quick lighting logs if we fancied a fire.
West Portal is a lovely area....it's a 5 min walk to the MUNI train which takes you direct to downtown SF.....though, this being our 3rd visit to SF, we love this side of the city more....Ocean Beach, Castro, Lands End and Golden Gate Park all worth visiting on this side of town.
I would definitely return to Sheila's if back in SF.