We stayed at Jeff's apartment for 5 nights and it was really cozy and warm. We did not have a chance to meet Jeff, but he left a direction of appliances and helped us a lot. We had a really compact Itinerary in Seoul everyday and it was really cold hanging out in Seoul in Winter. So every time when we back to the studio, we felt so comfortable just like home. The studio was extremely close to the subway station exit 3 which was very convenient. Jeff provided conversion plugs and a portable router which was very practical for travellers like us.