Is the Romanian language closer to Italian or Czech

[Mikula]

Italian, of course.
Here is example of Lords Prayer in Latin, Italian and Romanian.
As a native Czech I find only one simillar word:

ci ne izbăvește de cel rău.

in Czech
ale zbav nás od zlého

[Dandelion]

Neuter nouns in Romanian behave like they're of the masculine gender in singular and like they're of the feminine gender in plural.

In Czech the word for child is neuter in singular ('dítě') and feminine in plural ('děti').

Not a real commonality, but still noteworthy.

[gıulıoımpa]

Romanian is surprisingly close to Southern italian dialects don't be fooled by first impression of the sound, the main gap are the cases.

[alnortedelsur]

To Italian, of course.

Is this even a serious question?

[Kamal900]

To Italian, of course.

Is this even a serious question?

Especially on the fact that Romanian is an eastern Romance language which shares the same ancestry as Italian and other Romance languages AKA vulgar latin.

[Ülev]

prima zapada - first snow, za-padać in polish - snowing
pivnitsa and polish piwnica as basement

balta eng puddle, pool - Baltic sea is a big puddle

proto-indo-european is Romanian language

[Joso]

Italian

[Kriptc06]

prima zapada - first snow, za-padać in polish - snowing
pivnitsa and polish piwnica as basement

balta eng puddle, pool - Baltic sea is a big puddle

proto-indo-european is Romanian language

there are several slavic words in romanian, but it's still romance, like english has many latin/greek words.

Ceas - time/clock
Vreme - weather
prieten - friend
cocush - chicken

are some of the words with slavic origins that come to my mind now.

[Aspirin]

prima zapada - first snow, za-padać in polish - snowing
pivnitsa and polish piwnica as basement

balta eng puddle, pool - Baltic sea is a big puddle

proto-indo-european is Romanian language

Zăpadă I think is from Southern Slavs, and is used in South Romania, in Moldova for example is used term Omăt.

Baltă comes from slavic word Boloto (swamp), but in romanian have different meaning (puddle). For example second largest city in Republic of Moldova is called Bălți (puddles).

[AGIOS O TERROR]

By vocabulary, closer to Italian since there have been major romance imports since the 17th century and efforts of "de-slavization".

By pronunciation, probably closer to Czech. We have to take into consideration the geographical proximity of the 2 nations and their ethnic and linguistic development over the centuries. Italian had a very specific accent while Romanian is closer to a generic Central European accent.