I haven't watched the anime yet, partly due to reasons of time but mostly because if I tried to take in some of the manga's moments in anime form, I'd lose my mind so completely it'd never come back. And anyway, I can never really envision Tawawa in anything other than Himura Kiseki blue.
Personally, I think Tawawa on Monday is brilliant - the artist is really damn good and it gives me something to keep up with on Mondays. However, it is undoubtedly a very acquired taste, as while there are many words you could use to describe its various girls, there is one that fits them all: STACKED. And boy does it let you know about it.
If that sort of thing appeals to you, you'll probably love it. And even if you don't, Ai-chan's still excellent.