diff --git a/mamweb/settings_local.py b/mamweb/settings_local.py
index 9368524b..4cf76dc2 100644
--- a/mamweb/settings_local.py
+++ b/mamweb/settings_local.py
@@ -31,6 +31,7 @@ TEMPLATES[0]['OPTIONS']['debug'] = True
 from ipaddress import ip_network
 ALLOWED_HOSTS = [str(ip) for ip in ip_network('192.168.0.0/16')]
 ALLOWED_HOSTS.append('127.0.0.1')
+ALLOWED_HOSTS.append('localhost')
 
 # Database
 # https://docs.djangoproject.com/en/1.7/ref/settings/#databases
diff --git a/mamweb/static/css/mamweb.css b/mamweb/static/css/mamweb.css
index fa5de880..53e06967 100644
--- a/mamweb/static/css/mamweb.css
+++ b/mamweb/static/css/mamweb.css
@@ -421,6 +421,10 @@ input {
 	margin: 5px;
 }
 
+textarea.feedback {
+	margin: 5px;
+}
+
 
 /* titulni stranka */
 
diff --git a/odevzdavatko/forms.py b/odevzdavatko/forms.py
index 6eb2a973..a8538668 100644
--- a/odevzdavatko/forms.py
+++ b/odevzdavatko/forms.py
@@ -88,11 +88,12 @@ ReseniSPrilohamiFormSet = inlineformset_factory(m.Reseni,m.PrilohaReseni,
 class JednoHodnoceniForm(forms.ModelForm):
 	class Meta:
 		model = m.Hodnoceni
-		fields = ('problem', 'body', 'deadline_body')
+		fields = ('problem', 'body', 'deadline_body', 'feedback',)
 		widgets = {
 			'problem': autocomplete.ModelSelect2(
 				url='autocomplete_problem_odevzdatelny',   # FIXME: Dovolit i starší?
-				)
+				),
+			'feedback': forms.Textarea(attrs={'rows': 1, 'cols': 30, 'class': 'feedback'}),
 			}
 
 OhodnoceniReseniFormSet = formset_factory(JednoHodnoceniForm,
diff --git a/odevzdavatko/templates/odevzdavatko/detail.html b/odevzdavatko/templates/odevzdavatko/detail.html
index 10f86a14..9f6d31ac 100644
--- a/odevzdavatko/templates/odevzdavatko/detail.html
+++ b/odevzdavatko/templates/odevzdavatko/detail.html
@@ -91,7 +91,7 @@ $(document).ready(function(){
 
 <form method=post onsubmit="return zkontroluj_hodnoceni();">
 {# Poznámka #}
-<h3>Poznámka:</h3>
+<h3>Neveřejná poznámka:</h3>
 <p>{{ poznamka_form.poznamka }}</p>
 
 {# Hodnocení: #}
@@ -101,13 +101,14 @@ $(document).ready(function(){
 {{ form.management_form }}
 </table>
 <table id="form_set">
-<tr><th>Problém</th><th>Body</th><th>Deadline pro body</th></tr>
+<tr><th>Problém</th><th>Body</th><th>Deadline pro body</th><th>Zpětná vazba pro řešitele</th></tr>
 {% for subform in form %}
     <tbody>
 	<tr class="hodnoceni">
 		<td>{{ subform.problem }}</td>
 		<td>{{ subform.body }}</td>
 		<td>{{ subform.deadline_body }}</td>
+		<td>{{ subform.feedback }}</td>
 		<td><a href="#" class="smazat_hodnoceni" id="id_{{subform.prefix}}-jsremove"><img src="{% static "odevzdavatko/cross.png" %}" alt="Smazat"></a></td>
 	</tr>
     </tbody>
@@ -123,6 +124,7 @@ $(document).ready(function(){
 		<td>{{ form.empty_form.problem }}</td>
 		<td>{{ form.empty_form.body }}</td>
 		<td>{{ form.empty_form.deadline_body }}</td>
+		<td>{{ form.empty_form.feedback }}</td>
 		<td><a href="#" class="smazat_hodnoceni" id="id_{{form.empty_form.prefix}}-jsremove"><img src="{% static "odevzdavatko/cross.png" %}" alt="Smazat"></a></td>
 	</tr>
 </table>
diff --git a/odevzdavatko/templates/odevzdavatko/detail_resitele.html b/odevzdavatko/templates/odevzdavatko/detail_resitele.html
index 1c7622a7..fb0cb5fb 100644
--- a/odevzdavatko/templates/odevzdavatko/detail_resitele.html
+++ b/odevzdavatko/templates/odevzdavatko/detail_resitele.html
@@ -37,11 +37,12 @@
 {# Hodnocení: #}
 <h3>Hodnocení:</h3>
 <table id="form_set" class="dosla_reseni">
-<tr><th>Problém</th><th>Body</th>{# <th>Deadline pro body</th> #}</tr>
+<tr><th>Problém</th><th>Body</th><th>Zpětná vazba od opravovatele</th>{# <th>Deadline pro body</th> #}</tr>
 {% for h in hodnoceni %}
 	<tr class="hodnoceni">
 		<td>{{ h.problem }}</td>
 		<td>{{ h.body }}</td>
+		<td>{{ h.feedback }}</td>
 {#		<td>{{ h.deadline_body }}</td>#}
 	</tr>
 {% endfor %}
diff --git a/odevzdavatko/views.py b/odevzdavatko/views.py
index 6e0f7c47..6c232172 100644
--- a/odevzdavatko/views.py
+++ b/odevzdavatko/views.py
@@ -218,10 +218,11 @@ class DetailReseniView(DetailView):
 		self.reseni = get_object_or_404(m.Reseni, id=self.kwargs['pk'])
 		result = [] # Slovníky s klíči problem, body, deadline_body -- initial data pro f.OhodnoceniReseniFormSet
 		for hodn in m.Hodnoceni.objects.filter(reseni=self.reseni):
-			result.append(
-				{"problem": hodn.problem, 
+			result.append({
+				"problem": hodn.problem,
 				"body": hodn.body,
 				"deadline_body": hodn.deadline_body,
+				"feedback": hodn.feedback,
 				})
 		return result
 
@@ -245,30 +246,26 @@ def hodnoceniReseniView(request, pk, *args, **kwargs):
 	formset = f.OhodnoceniReseniFormSet(request.POST)
 	poznamka_form = f.PoznamkaReseniForm(request.POST, instance=reseni)
 	# TODO: Napsat validaci formuláře a formsetu
-	# TODO: Implementovat větev, kdy formulář validní není.
-	if formset.is_valid() and poznamka_form.is_valid():
-		with transaction.atomic():
-			# Poznámka je jednoduchá na zpracování:
-			poznamka_form.save()
+	if not (formset.is_valid() and poznamka_form.is_valid()):
+		raise ValueError(formset.errors, poznamka_form.errors)
 
-			# Smažeme všechna dosavadní hodnocení tohoto řešení
-			qs = m.Hodnoceni.objects.filter(reseni=reseni)
-			logger.info(f"Will delete {qs.count()} objects: {qs}")
-			qs.delete()
-			
-			# Vyrobíme nová podle formsetu
-			for form in formset:
-				problem = form.cleaned_data['problem']
-				body = form.cleaned_data['body']
-				deadline_body = form.cleaned_data['deadline_body']
-				hodnoceni = m.Hodnoceni(
-					problem=problem,
-					body=body,
-					deadline_body=deadline_body,
+	with transaction.atomic():
+		# Poznámka je jednoduchá na zpracování:
+		poznamka_form.save()
+
+		# Smažeme všechna dosavadní hodnocení tohoto řešení
+		qs = m.Hodnoceni.objects.filter(reseni=reseni)
+		logger.info(f"Will delete {qs.count()} objects: {qs}")
+		qs.delete()
+
+		# Vyrobíme nová podle formsetu
+		for form in formset:
+			hodnoceni = m.Hodnoceni(
 					reseni=reseni,
+					**form.cleaned_data,
 					)
-				logger.info(f"Creating Hodnoceni: {hodnoceni}")
-				hodnoceni.save()
+			logger.info(f"Creating Hodnoceni: {hodnoceni}")
+			hodnoceni.save()
 
 	return redirect(success_url)
 
@@ -285,6 +282,7 @@ class ResitelReseniView(DetailView):
 				{
 					"problem": hodn.problem,
 					"body": hodn.body,
+					"feedback": hodn.feedback,
 					# "deadline_body": hodn.deadline_body,
 				}
 			)
diff --git a/seminar/migrations/0108_hodnoceni_feedback.py b/seminar/migrations/0108_hodnoceni_feedback.py
new file mode 100644
index 00000000..282849d8
--- /dev/null
+++ b/seminar/migrations/0108_hodnoceni_feedback.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.16 on 2022-11-14 19:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('seminar', '0107_zmrazenavysledkovka'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='hodnoceni',
+            name='feedback',
+            field=models.TextField(blank=True, default='', help_text='Zpětná vazba řešiteli (plain text)', verbose_name='zpětná vazba'),
+        ),
+    ]
diff --git a/seminar/models/odevzdavatko.py b/seminar/models/odevzdavatko.py
index 77ed5018..9ae161c5 100644
--- a/seminar/models/odevzdavatko.py
+++ b/seminar/models/odevzdavatko.py
@@ -113,6 +113,8 @@ class Hodnoceni(bm.SeminarModelBase):
     problem = models.ForeignKey(am.Problem, verbose_name='problém',
                                 related_name='hodnoceni', on_delete=models.PROTECT)
 
+    feedback = models.TextField('zpětná vazba', blank=True, default='', help_text='Zpětná vazba řešiteli (plain text)')
+
     def __str__(self):
         return "{}, {}, {}".format(self.problem, self.reseni, self.body)