In some U.S. cities a block is 660 feet or 1/8 of a mile. This is the equivalent of 0.2 km. So think in these terms as you answer the question (your city/town may vary). When I say 'convenient', I mean that you would consider a stay at that hotel and travel via your Tesla to get there. For some Model S, it can take about 13 hours at a J1772 if recharging from 0 to completely full. For purposes of this poll 1 Block = on-site charging too.