Should I rent a place out for only one month?

[Kevin Huang]

I've got a nice young couple lined up to move into my townhouse 6/01.
Both are working professionals w/ income, and the girl loves the place, so they will probably be very good tenants to have. (girl even asked if they could sign 2-year lease until her fiance stopped her)

Another couple want to rent the place just for the month of May, because their new place won't be ready until June, and they are willing to vacate a few days early, so that I'll have time to clean the place up for the long term tenants.

So this is great, because I get to collect one extra month worth of rent (~$1600).
However, part of me is thinking what if something majorly goes wrong w/ the short term lease, that will jeopardize the long term tenants...
There's also the hidden cost of taking care of turnover w/ only one month rent - my time, and whatever effort I need to spend to make it ready for June.

What are your suggestions & opinions?

Thanks for any response in advance.