"it can be overwhelming" is a correct and usable phrase in written English. You can use it when you want to express that something is too much to handle or is difficult for someone to process. For example, "When I started my new job, I was taken aback by the amount of tasks I was expected to do - it can be overwhelming studying all the different procedures.".
And with every site displaying beautiful pictures and tantalizing offers, "it can be overwhelming".
Mr. Drevline also said he appreciated the small staff-to-guest ratio common in Asian hotels, but added "it can be overwhelming" at times.
It can be overwhelming at times.
"It can be overwhelming," she said.
If you put in too much, it can be overwhelming.
"Some weeks it can be overwhelming," she said.
It can be overwhelming, and too tempting to resist.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK