Will be in northern Virginia the end of this month. Hotel choices are the Courtyard by Marriott Arlington Rosslyn (on Clarendon) or Hilton Garden Inn Arlington Courthouse. Cost is within ten dollars of each other. Are there any positives or negatives to either I should consider? Have read TA reviews but can't make up my mind! Do want to avoid large school groups if possible - I'm a retired middle school principal and "been there, done that"!!! Any thoughts? In advance, thanks!