benvenuto in OSM.
La posizione dell'ostello è un po' errata? Anche perché nell'indirizzo si parla di via Bongiovanni.

Hi. In way way/162897710#map=15/52.5207/7.6600
The key telefon should be "phone". And the service times is in a strange format. See the wiki.

Hi. In a lot of trees like
node/5166888187#map=19/43.06737/141.32769
There is a typo "species;ja"

Hi. In this changeset a lot of ways have the new key "Obere". It is a typo?

Hi. In every node like
way/380247594#map=10/48.5721/12.7359
There is a typo: "abandonded"

Also, the usage of the key "access" with those values is a bit discouraged. See the wiki
access=*#Transport_mode_restrictions
To avoid false-positive errors

Hi. In this way way/531380884
There is a typo in the access key "acces"

It's a small problem, but clearly is a mistake of the Wikipedia page. It is a nosense the 2-digits of resolution. You should follow the link to NGA database or other sources. (Wikipedia is just a tertiary source of information) it's 26 nautical miles. Cheers

Ciao. Ma questa way è un isola. Gli oggetti highway devono sempre essere collegati ad altri highway, altrimenti sono "irraggiungibili" e non c'è modo di passarci

Hi. What is the new key xxx=roundabout?

Hi. How do you know the range of the lighthouse is 25.92 miles?
It's a strange value :-)

Hi. I suppose you mean "name:en", rather than "name:Enlglish"

Ah poi il nome è proprio quello? Considera che nel tag "name" ci deve andare solo il nome proprio, senza orpelli descrittivi

Ciao e benvenuto in OSM. Se si tratta di un bar "classico" (apre presto la mattina, fa tanti caffè, non c'è musica giovane fino a tardi) va mappato in osm con "amenity=cafe" invece che "bar".
Inoltre le key birra e bevande sono un po' inventate. Ma capisco che questo è il primo tuo edit.

Hi. The way
way/164919855
has a key "ano_construcao", that is absolutely new in OSM (never used). Probably you mean the key "start_date". See the wiki

Hi. The node
node/26736834
Has a key "aname:sv". Is it maybe a typo for "name:sv" ?

Actually, if the problem is only a milestone with 2 tags only and an obvious typo, should be safe to fix it.
Thanks for your time

You are right. I will stop to use that tool from my mobile.
Of course the only logic purpose of this tool is to contact the mapper, and avoid to fix whatever, because the activity, in this case, could also be an hotel or a spaceship, we don't know

benvenuto in OSM!

Hi. Welcome OSM. Are you sure about the name of that travel agency? maybe you can find some website of the activity? Also please note that is uncommon to translate a shop name.