Steve and elke are very very nice people. we asked many questions about barcelona and always got an answer back.
as far as the location: 5min walk from La Rambla, stores nearby, very safe district, coffee shops around. 7 min walk to Metro. If we get back to Barcelona, we will not look for another location but will stay with Elke and Steve.
P.S. full of useful information inside the apartment, including maps, coupons, & the wall full of recommendations of restaurants and cool places ! very nice details. Cheers