We saw a rental property last Thursday that is absolutely PERFECT for us; we've been looking for a couple of years and this ticks all of our boxes. I nearly cried looking around it! At the end of the viewing we told the estate agent that we could get them the holding deposit within the hour and we'd definitely take the place. She told us that another couple had viewed on the Wednesday and they said they were also interested but needed to check a few things with regards to their current contract, ie. whether they could break it early. The estate agent was waiting to hear back from them. I was very much of the 'but we have the money now, we don't need to check anything, we want to take the place WHY CAN'T WE HAVE THE PLACE!?' mentality, but the estate agent has made us and the other couple complete a questionnaire which she's then going to forward to the landlord to choose which one of us gets the place. I'm terrified that we're going to lose out- we won't get another place like this (we haven't seen another in 2 years of looking). I still think it's unfair that we didn't have to check anything and could've paid the holding deposit there and then but didn't get the chance, but what sort of things do you think might sway the decision in our favour? We're both working full-time, have good salaries, in our late 30s/early 40s, have a 2 year old whose nursery is close to the rental place, we've been in our current rental for 13 years and have never missed or been late with the rent- we've offered references- have no contractual hang-ups here (we're on a rolling contract as knew we were planning to leave) and would basically want to stay in the new place for as long as possible so as not to disrupt our son's schooling...surely we have a good chance? Haven't heard anything since Friday and I'm terrified we'll get beaten to the punch... 
How should I approach the estate agents tomorrow? I would like to call them for an update.