water evaporation i dont see it beign that big a hastle since your only gonna look at a fish only tank , right? so no special lighting may be required thats too hot
as far as least effort the only probs i had when i set up my 10 was at the beggining during the cycle and a few weeks after when the parameters were a little haywire but once thats done , its just like any normal tank IMHO , speaking from my personal experience of course, it is not very forgiving as far as water changes go so i do keep up with those every sunday , i do normally a 1-1.5 gallon water change, i dont use a skimmer and the hob on it only runs carbon through a filter bag
feeding is a little tricky cause you can easily overfeed , i found that just scrapping off a little from a frozen cube once or twice with a knife is enough
********DISCLAIMER**********
*this is not advice take it for what you may, my personnal experience may not be typical, and results may vary, this experience comes from a person keeping 3 fish in a 10 gallon ,dwarf lion , clown, and mandarin goby*