On the right side of the ...

[birgit33]

"On the right side of the boulevard, there was a playground where I had played for so many hours with my closest friends." I think this is a correct sentence, am I right ?

[Raymott]

"On the right side of the boulevard, there was a playground where I had played for so many hours with my closest friends." I think this is a correct sentence, am I right ?

It's grammatical. By itself it's not very descriptive, since the "right side" of the boulevard would depend on which direction you were walking along it.